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TI-2026-76630 Aliases CVE-2026-112900GHSA-w889-685w-c8fh

Argument injection in Pillow Ghostscript call can run commands

Priority MEDIUM 50CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 3 fixed, 5 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-78.

Summary

Pillow from 2.6.0 before 13.0.0 is affected. EpsImagePlugin.Ghostscript passes a caller-controlled filename after -f without converting it to an absolute path, so a name starting with a hyphen is read as a Ghostscript option (CWE-88). An unauthenticated remote attacker who controls the filename can inject Ghostscript arguments, and arbitrary command execution additionally requires an @ argument file whose referenced text the attacker controls.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

Pillow is a Python imaging library. From 2.6.0 until 13.0.0, Pillow is vulnerable to argument injection when invoking Ghostscript for EPS input. EpsImagePlugin.Ghostscript passes a caller-controlled input filename after -f without converting it to a safe absolute path, so a name beginning with a hyphen can be interpreted as a Ghostscript option. An attacker who controls the filename can inject Ghostscript arguments. Arbitrary command execution specifically requires a leading @ argument-file filename and control of the referenced text file containing additional Ghostscript arguments; the reported chain reproduces with the default -dSAFER invocation. This issue is fixed in version 13.0.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01303 70th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Pillow (python-pillow): 13.0.0Pillow (PyPI): 13.0.0Red Hat: 7 advisoriesRed Hat: 3 fixed, 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

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-pillowPillow2.6.0 to before 13.0.013.0.0Patch availableCNA
—Pillow (PyPI)2.6.0 to before 13.0.013.0.0Patch availableGHSA-w889-685w-c8fh
  • Pillow Vendorpython-pillow Affected 2.6.0 to before 13.0.0 Fixed in 13.0.0 Patch available CNA
  • Pillow (PyPI) Vendor— Affected 2.6.0 to before 13.0.0 Fixed in 13.0.0 Patch available GHSA-w889-685w-c8fh

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*2.6.0 to before 13.0.0Vulnerablepython-pillow
  • cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:* Versions 2.6.0 to before 13.0.0 Vulnerable ·python-pillow

Remediation

Upgrade Pillow to version 13.0.0. Red Hat fixes this in RHSA-2026:93077 for Red Hat Enterprise Linux AppStream (v. 8) and Red Hat Enterprise Linux CRB (v. 8), and in RHSA-2026:94702, RHSA-2026:94709, RHSA-2026:94715, RHSA-2026:94717, RHSA-2026:94721 and RHSA-2026:94738 for Red Hat AI Inference Server 3.5; Red Hat lists no fix plan for Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift AI (RHOAI) and Red Hat Satellite 6.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

  • Fix · CNA Pillow (python-pillow) Fixed in 13.0.0
  • Fix · GHSA-w889-685w-c8fh Pillow (PyPI) Fixed in 13.0.0 Advisory →

Red Hat 7 advisories

  • RHSA-2026:94738 Released 2026-11-03 · Red Hat rating Critical
    Red Hat AI Inference 3.5.3 (CUDA)
    • Red Hat AI Inference Server 3.5 registry.redhat.io/rhaii/vllm-cuda-rhel9
  • RHSA-2026:94721 Released 2026-11-03 · Red Hat rating Critical
    Red Hat AI Inference Tech Preview 3.5.3 (Gaudi)
    • Red Hat AI Inference Server 3.5 registry.redhat.io/rhaii/vllm-gaudi-rhel9
  • RHSA-2026:94717 Released 2026-11-03 · Red Hat rating Critical
    Red Hat AI Inference 3.5.3 (Spyre)
    • Red Hat AI Inference Server 3.5 registry.redhat.io/rhaii/vllm-spyre-rhel9
Show 4 more Red Hat advisories
  • RHSA-2026:94715 Released 2026-11-03 · Red Hat rating Critical
    Red Hat AI Inference Model Optimization Tools 3.5.3 (CUDA)
    • Red Hat AI Inference Server 3.5 registry.redhat.io/rhaii/model-opt-cuda-rhel9
  • RHSA-2026:94709 Released 2026-11-03 · Red Hat rating Critical
    Red Hat AI Inference 3.5.3 (ROCm)
    • Red Hat AI Inference Server 3.5 registry.redhat.io/rhaii/vllm-rocm-rhel9
  • RHSA-2026:94702 Released 2026-11-03 · Red Hat rating Critical
    Red Hat AI Inference 3.5.3 (CPU)
    • Red Hat AI Inference Server 3.5 registry.redhat.io/rhaii/vllm-cpu-rhel9
  • RHSA-2026:93077 Released 2026-10-30 · Red Hat rating Critical
    python-pillow security update
    • Red Hat Enterprise Linux AppStream (v. 8) python-pillow-5.1.1-36.el8_10, python3-pillow-5.1.1-36.el8_10
    • Red Hat Enterprise Linux CRB (v. 8) python3-pillow-5.1.1-36.el8_10, python3-pillow-devel-5.1.1-36.el8_10, python3-pillow-doc-5.1.1-36.el8_10 +1

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Exploit IntelligenceAffectedNo fix yet
Red Hat AI Inference ServerAffectedNo fix yet
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet
Red Hat OpenShift AI (RHOAI)AffectedNo fix yet
Red Hat Satellite 6AffectedNo fix yet
Red Hat AI Inference Server 3.5Fixed RHSA-2026:94702, RHSA-2026:94709, RHSA-2026:94715, RHSA-2026:94717, RHSA-2026:94721, RHSA-2026:94738
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:93077
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:93077
Not affected: 3 products
  • Red Hat Ansible Automation Platform 2
  • Red Hat Enterprise Linux 7
  • Red Hat OpenShift AI (RHOAI)

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-112900
  2. 2026-10-20 CISA SSVC decision points changed
  3. 2026-10-21 Alias added: GHSA-w889-685w-c8fh
  4. 2026-10-21 Fix available: PyPI/[email protected] · GHSA-w889-685w-c8fh
  5. 2026-10-21 CVSS score added · GHSA-w889-685w-c8fh
  6. 2026-10-21 Weakness changed · GHSA-w889-685w-c8fh
  7. 2026-10-21 5 new references · GHSA-w889-685w-c8fh
  8. 2026-10-25 EPSS moved to the 50th–90th percentile
  9. 2026-10-27 CVSS score added · NVD
  10. 2026-10-30 Affected versions changed · Red Hat
  11. 2026-10-31 Fix available: RHSA-2026:93077 · Red Hat
  12. 2026-10-31 Fix available: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · Red Hat
  13. 2026-11-04 Fix available: RHSA-2026:94717 · Red Hat
  14. 2026-11-04 Fix available: RHSA-2026:94715 · Red Hat
  15. 2026-11-04 Fix available: RHSA-2026:94709 · Red Hat
  16. 2026-11-04 Fix available: RHSA-2026:94738 · Red Hat
  17. 2026-11-04 Fix available: RHSA-2026:94702 · Red Hat
  18. 2026-11-04 Fix available: RHSA-2026:94721 · Red Hat
  19. 2026-11-04 Fix available: Red Hat AI Inference Server 3.5 · Red Hat
  20. 2026-11-06 Affected versions changed · Red Hat
  21. 2026-11-06 Affected versions changed · Red Hat
  22. 2026-11-06 Affected versions changed · Red Hat
  23. 2026-11-06 Affected versions changed · Red Hat
  24. 2026-11-07 Affected versions changed · Red Hat

References

Exploit 1

Patch 1

Advisory 1

Other 2

  • TI-2026-76627 Out-of-bounds read in Pillow TIFF encoder ColorMap handling CVSS 4.0HIGH 8.8
  • TI-2026-76625 Quadratic-time denial of service in Pillow PDF save_all CVSS 4.0HIGH 8.7
  • TI-2026-76605 NULL pointer dereference in Pillow's Image.merge function CVSS 4.0HIGH 8.7
  • TI-2026-76604 Out-of-bounds read in Pillow TIFF decoding leaks heap memory CVSS 4.0HIGH 8.8
  • TI-2026-76602 Double free in Pillow ImagingScaleAffine on allocation failure CVSS 4.0HIGH 8.7
  • TI-2026-76600 GIF seek in Pillow keeps rejected size, allowing denial of service CVSS 4.0HIGH 8.7
See all 110 →

Sources

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