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TI-2026-10316 Aliases CVE-2026-11972GHSA-wqxf-pjxh-hh4h

tarfile opened in streaming mode mishandles EOF

Priority LOW 37CWE-252Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 1 fixed, 12 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-770.

Summary

When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00715 53rd percentileScored 2026-11-07
Fix Partial CPython (Python Software Foundation): 3.10.21, 3.11.16, 3.12.14 +3Red Hat: 6 advisoriesRed Hat: 1 fixed, 12 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Python Software FoundationCPythonbefore 3.10.21; 3.11.0 to before 3.11.16; 3.12.0 to before 3.12.14; 3.13.0 to before 3.13.15; 3.14.0 to before 3.14.7; 3.15.0a1 to before 3.15.0b43.10.21, 3.11.16, 3.12.14, 3.13.15, 3.14.7, 3.15.0b4Patch availableCNA
  • CPython VendorPython Software Foundation Affected before 3.10.21; 3.11.0 to before 3.11.16; 3.12.0 to before 3.12.14; 3.13.0 to before 3.13.15; 3.14.0 to before 3.14.7; 3.15.0a1 to before 3.15.0b4 Fixed in 3.10.21, 3.11.16, 3.12.14, 3.13.15, 3.14.7, 3.15.0b4 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*——python-pillow
  • cpe:2.3:a:python:python:*:*:*:*:*:*:*:* Versions — — ·python-pillow

Remediation

  • Fix · CNA CPython (Python Software Foundation) Fixed in 3.10.21, 3.11.16, 3.12.14, 3.13.15, 3.14.7, 3.15.0b4

Red Hat 6 advisories

  • RHSA-2026:54554 Released 2026-08-13 · Red Hat rating Important
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images python3.13-3.13.15-1.hum1@aarch64, python3.13-3.13.15-1.hum1@src, python3.13-3.13.15-1.hum1@x86_64 +16
  • RHSA-2026:54534 Released 2026-08-13 · Red Hat rating Important
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images python-unversioned-command-3.14.7-1.hum1@noarch@public-hummingbird-aarch64-rpms, python-unversioned-command-3.14.7-1.hum1@noarch@public-hummingbird-x86_64-rpms, python3-3.14.7-1.hum1@aarch64 +28
  • RHSA-2026:35813 Released 2026-07-05 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images python3.12-3.12.13-3.3.hum1@aarch64, python3.12-3.12.13-3.3.hum1@src, python3.12-3.12.13-3.3.hum1@x86_64 +12
Show 3 more Red Hat advisories
  • RHSA-2026:35812 Released 2026-07-05 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images python3.13-3.13.14-1.2.hum1@aarch64, python3.13-3.13.14-1.2.hum1@src, python3.13-3.13.14-1.2.hum1@x86_64 +16
  • RHSA-2026:35807 Released 2026-07-05 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images python3.11-3.11.15-4.4.hum1@aarch64, python3.11-3.11.15-4.4.hum1@src, python3.11-3.11.15-4.4.hum1@x86_64 +12
  • RHSA-2026:35806 Released 2026-07-05 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images python3.14-3.14.6-1.2.hum1@aarch64, python3.14-3.14.6-1.2.hum1@src, python3.14-3.14.6-1.2.hum1@x86_64 +26

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Python Software Foundation CPython 3.10.21, 3.11.16 and 4 more versions

    3 records Highest priority Priority MEDIUM 1 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-10297 tarfile extraction filter bypass allows escaping the destination directoryPriority MEDIUM 41
    • TI-2026-00645 Configuration Injection via Carriage Return (\r) in write() methodPriority LOW 18
    Show all 3 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Exploit IntelligenceAffectedNo fix yet: Fix deferred
Red Hat AI Inference ServerAffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 6AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)AffectedNo fix yet: Fix deferred
Red Hat OpenShift Dev SpacesAffectedNo fix yet: Fix deferred
Red Hat OpenShift Virtualization 4AffectedNo fix yet: Fix deferred
Self-service automation portal 2AffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesFixed RHSA-2026:35806, RHSA-2026:35807, RHSA-2026:35812, RHSA-2026:35813, RHSA-2026:54534, RHSA-2026:54554

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-11972
  2. 2026-10-03 Alias added: GHSA-wqxf-pjxh-hh4h
  3. 2026-10-10 Affected versions changed · Red Hat

References

Patch 8

Advisory 1

Other 1

  • TI-2024-07037 Quadratic complexity parsing cookies with backslashes CVSS 3.1HIGH 7.5
  • TI-2024-11791 Bypass extraction filter to modify file metadata outside extraction directory CVSS 3.1MEDIUM 5.3
  • TI-2024-00411 Quoted zip-bomb protection for zipfile CVSS 3.1MEDIUM 6.2
  • TI-2026-13296 `HTTPPasswordMgr` can send saved HTTPS credentials via HTTP because of incorrect scheme matching CVSS 4.0MEDIUM 6.0
  • TI-2024-06422 Email header injection due to unquoted newlines CVSS 3.1MEDIUM 5.5
  • TI-2026-04606 Possible to hijack modules in current working directory CVSS 4.0MEDIUM 5.6
See all 83 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences