Upstream information

CVE-2026-9323 at MITRE

Description

The urwid web display backend (urwid/display/web.py) generates web session identifiers (urwid_id) in Screen.start() by concatenating two random.randrange(10**9) calls that use Python's Mersenne Twister PRNG, which is not cryptographically secure. Each call consumes approximately 30 bits of PRNG state, and the Mersenne Twister internal state is approximately 19,937 bits, so an attacker who observes approximately 334 session IDs (for example via the X-Urwid-ID HTTP response header) can fully reconstruct the internal state and predict all past and future session IDs (Path B). The same identifier is also used as the filename of a FIFO created in the world-listable /tmp directory (for example /tmp/urwid375487765176907690.in), so any local user on the host can list /tmp to enumerate active session tokens directly (Path A). With a valid session ID, an attacker can read the victim's terminal screen via the polling endpoint, inject keystrokes into the victim's session (yielding OS-level code execution with the session owner's privileges if the session runs a shell), and inject exit sequences or flood the FIFO to terminate or crash the session. A prior Bandit S311 warning on this usage was suppressed with # noqa: S311 rather than fixed

Other Security Trackers

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (VulnCheck) SUSE
Base Score 8.1 8.1
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network Network
Attack Complexity High High
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High High
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1
CVSS v4 Scores
CVSS detail CNA (VulnCheck)
Base Score 9.2
Vector CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity High
Attack Requirements Present
Privileges Required None
User Interaction None
Vulnerable System Confidentiality Impact High
Vulnerable System Integrity Impact High
Vulnerable System Availability Impact High
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1271868 [IN_PROGRESS]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Image SLES15-SP6
Image SLES15-SP6-BYOS
Image SLES15-SP6-BYOS-GCE
Image SLES15-SP6-GCE
Image SLES15-SP6-Hardened-BYOS
Image SLES15-SP6-Hardened-BYOS-GCE
Image SLES15-SP6-SAP
Image SLES15-SP6-SAP-Azure
Image SLES15-SP6-SAP-Azure-3P
Image SLES15-SP6-SAP-BYOS
Image SLES15-SP6-SAP-BYOS-Azure
Image SLES15-SP6-SAP-BYOS-EC2
Image SLES15-SP6-SAP-BYOS-GCE
Image SLES15-SP6-SAP-EC2
Image SLES15-SP6-SAP-GCE
Image SLES15-SP6-SAP-Hardened
Image SLES15-SP6-SAP-Hardened-Azure
Image SLES15-SP6-SAP-Hardened-BYOS
Image SLES15-SP6-SAP-Hardened-BYOS-Azure
Image SLES15-SP6-SAP-Hardened-BYOS-EC2
Image SLES15-SP6-SAP-Hardened-BYOS-GCE
Image SLES15-SP6-SAP-Hardened-EC2
Image SLES15-SP6-SAP-Hardened-GCE
Image SLES15-SP6-SAPCAL
Image SLES15-SP6-SAPCAL-Azure
Image SLES15-SP6-SAPCAL-EC2
Image SLES15-SP6-SAPCAL-GCE
Image SLES15-SP7-BYOS-GCE
Image SLES15-SP7-GCE
Image SLES15-SP7-GCE-3P
Image SLES15-SP7-Hardened-BYOS-GCE
Image SLES15-SP7-SAP-Azure
Image SLES15-SP7-SAP-Azure-3P
Image SLES15-SP7-SAP-BYOS-Azure
Image SLES15-SP7-SAP-BYOS-EC2
Image SLES15-SP7-SAP-BYOS-GCE
Image SLES15-SP7-SAP-EC2
Image SLES15-SP7-SAP-GCE
Image SLES15-SP7-SAP-GCE-3P
Image SLES15-SP7-SAP-Hardened-Azure
Image SLES15-SP7-SAP-Hardened-BYOS-Azure
Image SLES15-SP7-SAP-Hardened-BYOS-EC2
Image SLES15-SP7-SAP-Hardened-BYOS-GCE
Image SLES15-SP7-SAP-Hardened-GCE
Image SLES15-SP7-SAPCAL-Azure
Image SLES15-SP7-SAPCAL-EC2
Image SLES15-SP7-SAPCAL-GCE
  • python3-urwid >= 2.0.1-150000.3.3.1
SUSE Liberty Linux 10
  • python3-urwid >= 2.5.3-4.el10_2.5
 Patchnames:
RHSA-2026:58561 (x86_64)
SUSE Liberty Linux 8
  • python3-urwid >= 1.3.1-5.el8_10
 Patchnames:
RHSA-2026:58562 (x86_64)
SUSE Liberty Linux 9
  • python3-urwid >= 2.1.2-4.el9_8.1
 Patchnames:
RHSA-2026:58952 (x86_64)
RHSA-2026:58955 (x86_64)
SUSE Linux Enterprise Desktop 15 SP7
SUSE Linux Enterprise Server 15 SP7
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • python3-urwid >= 2.0.1-150000.3.3.1
  • python311-urwid >= 2.1.2-150400.11.6.1
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP7-2026-3460 (aarch64,ppc64le,s390x,x86_64)
SUSE-SLE-Module-Python3-15-SP7-2026-3425 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • python3-urwid >= 2.0.1-150000.3.3.1
  • python311-urwid >= 2.1.2-150400.11.6.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-3425 (aarch64,x86_64)
SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-3460 (aarch64,x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • python3-urwid >= 2.0.1-150000.3.3.1
  • python311-urwid >= 2.1.2-150400.11.6.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-3425 (aarch64,x86_64)
SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-3460 (aarch64,x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
  • python3-urwid >= 2.0.1-150000.3.3.1
  • python311-urwid >= 2.1.2-150400.11.6.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-3425 (aarch64,x86_64)
SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-3460 (aarch64,x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • python3-urwid >= 2.0.1-150000.3.3.1
  • python311-urwid >= 2.1.2-150400.11.6.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-3425 (aarch64,x86_64)
SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-3460 (aarch64,x86_64)
SUSE Linux Enterprise Module for Basesystem 15 SP7
  • python3-urwid >= 2.0.1-150000.3.3.1
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP7-2026-3460 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Module for Python 3 15 SP7
  • python311-urwid >= 2.1.2-150400.11.6.1
 Patchnames:
SUSE-SLE-Module-Python3-15-SP7-2026-3425 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server 15 SP4-LTSS
  • python3-urwid >= 2.0.1-150000.3.3.1
  • python311-urwid >= 2.1.2-150400.11.6.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-3425 (aarch64,ppc64le,s390x,x86_64)
SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-3460 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server 15 SP5-LTSS
  • python3-urwid >= 2.0.1-150000.3.3.1
  • python311-urwid >= 2.1.2-150400.11.6.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-3425 (aarch64,ppc64le,s390x,x86_64)
SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-3460 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server 15 SP6-LTSS
  • python3-urwid >= 2.0.1-150000.3.3.1
  • python311-urwid >= 2.1.2-150400.11.6.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-3425 (aarch64,ppc64le,s390x,x86_64)
SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-3460 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • python3-urwid >= 2.0.1-150000.3.3.1
  • python311-urwid >= 2.1.2-150400.11.6.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP4-2026-3425 (ppc64le,x86_64)
SUSE-SLE-Product-SLES_SAP-15-SP4-2026-3460 (ppc64le,x86_64)
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • python3-urwid >= 2.0.1-150000.3.3.1
  • python311-urwid >= 2.1.2-150400.11.6.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP5-2026-3425 (ppc64le,x86_64)
SUSE-SLE-Product-SLES_SAP-15-SP5-2026-3460 (ppc64le,x86_64)
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • python3-urwid >= 2.0.1-150000.3.3.1
  • python311-urwid >= 2.1.2-150400.11.6.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP6-2026-3425 (ppc64le,x86_64)
SUSE-SLE-Product-SLES_SAP-15-SP6-2026-3460 (ppc64le,x86_64)
SUSE Manager Proxy LTS 4.3
  • python3-urwid >= 2.0.1-150000.3.3.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Proxy-4.3-LTS-2026-3460 (x86_64)
SUSE Manager Retail Branch Server LTS 4.3
  • python3-urwid >= 2.0.1-150000.3.3.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.3-LTS-2026-3460 (x86_64)
SUSE Manager Server LTS 4.3
  • python3-urwid >= 2.0.1-150000.3.3.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Server-4.3-LTS-2026-3460 (ppc64le,s390x,x86_64)
openSUSE Tumbleweed
  • python313-urwid >= 4.0.5-1.1
  • python314-urwid >= 4.0.5-1.1
 Patchnames:
openSUSE-Tumbleweed-2026-11356

First public cloud image revisions this CVE is fixed in:

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 python-urwid Released
SUSE Linux Enterprise High Performance Computing 12 python-urwid Won't fix
SUSE Linux Enterprise Module for Basesystem 15 SP7 python-urwid Released
SUSE Linux Enterprise Module for Python 3 15 SP7 python-urwid Released
SUSE Linux Enterprise Server 15 SP7 python-urwid Released
SUSE Linux Enterprise Server for SAP Applications 15 SP7 python-urwid Released
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 12 SP5 python-urwid Won't fix
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS python-urwid Released
SUSE Linux Enterprise High Performance Computing 15 SP5 python-urwid Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS python-urwid Released
SUSE Linux Enterprise Module for Basesystem 15 SP4 python-urwid Affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 python-urwid Affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 python-urwid Affected
SUSE Linux Enterprise Module for Python 3 15 SP4 python-urwid Affected
SUSE Linux Enterprise Module for Python 3 15 SP5 python-urwid Affected
SUSE Linux Enterprise Module for Python 3 15 SP6 python-urwid Affected
SUSE Linux Enterprise Server 12 SP5 python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP5-LTSS python-urwid Won't fix
SUSE Linux Enterprise Server 15 SP4 python-urwid Affected
SUSE Linux Enterprise Server 15 SP4-LTSS python-urwid Released
SUSE Linux Enterprise Server 15 SP5 python-urwid Affected
SUSE Linux Enterprise Server 15 SP5-LTSS python-urwid Released
SUSE Linux Enterprise Server 15 SP6 python-urwid Affected
SUSE Linux Enterprise Server 15 SP6-LTSS python-urwid Released
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 python-urwid Won't fix
SUSE Linux Enterprise Server for SAP Applications 15 SP4 python-urwid Released
SUSE Linux Enterprise Server for SAP Applications 15 SP5 python-urwid Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 python-urwid Released
SUSE Manager Proxy 4.3 python-urwid Affected
SUSE Manager Proxy LTS 4.3 python-urwid Released
SUSE Manager Retail Branch Server 4.3 python-urwid Affected
SUSE Manager Retail Branch Server LTS 4.3 python-urwid Released
SUSE Manager Server 4.3 python-urwid Affected
SUSE Manager Server LTS 4.3 python-urwid Released
Products past their end of life and not receiving proactive updates anymore.
HPE Helion OpenStack 8 python-urwid Won't fix
SUSE CaaS Platform 4.0 python-urwid Affected
SUSE Enterprise Storage 6 python-urwid Affected
SUSE Enterprise Storage 7 python-urwid Affected
SUSE Enterprise Storage 7.1 python-urwid Affected
SUSE Linux Enterprise Desktop 15 python-urwid Affected
SUSE Linux Enterprise Desktop 15 SP1 python-urwid Affected
SUSE Linux Enterprise Desktop 15 SP2 python-urwid Affected
SUSE Linux Enterprise Desktop 15 SP3 python-urwid Affected
SUSE Linux Enterprise Desktop 15 SP4 python-urwid Affected
SUSE Linux Enterprise Desktop 15 SP5 python-urwid Affected
SUSE Linux Enterprise Desktop 15 SP6 python-urwid Affected
SUSE Linux Enterprise High Performance Computing 12 SP1 python-urwid Won't fix
SUSE Linux Enterprise High Performance Computing 12 SP2 python-urwid Won't fix
SUSE Linux Enterprise High Performance Computing 12 SP3 python-urwid Won't fix
SUSE Linux Enterprise High Performance Computing 12 SP4 python-urwid Won't fix
SUSE Linux Enterprise High Performance Computing 15 python-urwid Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 python-urwid Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS python-urwid Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS python-urwid Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 python-urwid Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS python-urwid Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS python-urwid Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 python-urwid Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS python-urwid Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS python-urwid Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 python-urwid Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS python-urwid Released
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS python-urwid Released
SUSE Linux Enterprise High Performance Computing 15-ESPOS python-urwid Affected
SUSE Linux Enterprise High Performance Computing 15-LTSS python-urwid Affected
SUSE Linux Enterprise Module for Basesystem 15 python-urwid Affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 python-urwid Affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 python-urwid Affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 python-urwid Affected
SUSE Linux Enterprise Module for Python 2 15 SP1 python-urwid Affected
SUSE Linux Enterprise Module for Python 2 15 SP2 python-urwid Affected
SUSE Linux Enterprise Module for Python 2 15 SP3 python-urwid Affected
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT python-urwid Won't fix
SUSE Linux Enterprise Real Time 15 SP2 python-urwid Affected
SUSE Linux Enterprise Real Time 15 SP3 python-urwid Affected
SUSE Linux Enterprise Real Time 15 SP4 python-urwid Affected
SUSE Linux Enterprise Server 12 python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP1 python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP1-LTSS python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP2 python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP2-BCL python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP2-ESPOS python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP2-LTSS python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP3 python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP3-BCL python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP3-ESPOS python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP3-LTSS python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP4 python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP4-ESPOS python-urwid Won't fix
SUSE Linux Enterprise Server 12 SP4-LTSS python-urwid Won't fix
SUSE Linux Enterprise Server 12-LTSS python-urwid Won't fix
SUSE Linux Enterprise Server 15 python-urwid Affected
SUSE Linux Enterprise Server 15 SP1 python-urwid Affected
SUSE Linux Enterprise Server 15 SP1-BCL python-urwid Affected
SUSE Linux Enterprise Server 15 SP1-LTSS python-urwid Won't fix
SUSE Linux Enterprise Server 15 SP2 python-urwid Affected
SUSE Linux Enterprise Server 15 SP2-BCL python-urwid Affected
SUSE Linux Enterprise Server 15 SP2-LTSS python-urwid Won't fix
SUSE Linux Enterprise Server 15 SP3 python-urwid Affected
SUSE Linux Enterprise Server 15 SP3-BCL python-urwid Affected
SUSE Linux Enterprise Server 15 SP3-LTSS python-urwid Won't fix
SUSE Linux Enterprise Server 15-LTSS python-urwid Affected
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 python-urwid Won't fix
SUSE Linux Enterprise Server for SAP Applications 12 SP1 python-urwid Won't fix
SUSE Linux Enterprise Server for SAP Applications 12 SP2 python-urwid Won't fix
SUSE Linux Enterprise Server for SAP Applications 12 SP3 python-urwid Won't fix
SUSE Linux Enterprise Server for SAP Applications 12 SP4 python-urwid Won't fix
SUSE Linux Enterprise Server for SAP Applications 15 python-urwid Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 python-urwid Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 python-urwid Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 python-urwid Affected
SUSE Manager Proxy 4.0 python-urwid Affected
SUSE Manager Proxy 4.1 python-urwid Affected
SUSE Manager Proxy 4.2 python-urwid Affected
SUSE Manager Retail Branch Server 4.0 python-urwid Affected
SUSE Manager Retail Branch Server 4.1 python-urwid Affected
SUSE Manager Retail Branch Server 4.2 python-urwid Affected
SUSE Manager Server 4.0 python-urwid Affected
SUSE Manager Server 4.1 python-urwid Affected
SUSE Manager Server 4.2 python-urwid Affected
SUSE OpenStack Cloud 7 python-urwid Won't fix
SUSE OpenStack Cloud 8 python-urwid Won't fix
SUSE OpenStack Cloud 9 python-urwid Won't fix
SUSE OpenStack Cloud Crowbar 8 python-urwid Won't fix
SUSE OpenStack Cloud Crowbar 9 python-urwid Won't fix
openSUSE Leap 15.3 python-urwid Affected
openSUSE Leap 15.4 python-urwid Released
openSUSE Leap 15.5 python-urwid Affected
openSUSE Leap 15.6 python-urwid Affected

SUSE Timeline for this CVE

CVE page created: Mon Jul 20 16:24:44 2026
CVE page last modified: Sun Aug 30 19:44:57 2026