VDB
CVE-2026-112391
CVE-2026-112391
PUBLISHED
CVSS 6.3 MEDIUM
Reported by GitHub_M · Published October 19, 2026
Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow's PdfParser.get_value() can recurse without a limit while reading nested PDF objects. The parser follows attacker-controlled arrays and dictionaries when an existing PDF is opened for append. An attacker can provide a deeply nested PDF to an application that saves an image with PDF append enabled. This can raise an uncaught RecursionError or terminate the worker, causing denial of service. This issue is fixed in version 13.0.0.
Risk Scores
CVSS 4.0
6.3
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| python-pillow | Pillow | >= 5.1.0, < 13.0.0 |
| chainguard | openstack-horizon-2025.2 | 0 |
| chainguard | nemo-rl-cuda-13.0 | 0 |
| chainguard | superset-fips-6.1 | 0 |
| PyPI | Pillow | 5.1.0 |
| chainguard | open-webui | 0 |
| python-pillow | Pillow | 5.1.0 |
| chainguard | apache-beam-python-3.12-sdk | 0 |
| chainguard | py3-pytorch-cuda-13.0 | 0 |
| chainguard | py3-pillow | 0 |
| wolfi | open-webui | 0 |
| chainguard | nemo-gym | 0 |
| wolfi | py3-pillow | 0 |
Timeline
- Oct 19, 2026 CVE Published
- Oct 20, 2026 EPSS Score
- Oct 21, 2026 EPSS Score
- Oct 24, 2026 EPSS Score
- Oct 25, 2026 EPSS Score
- Oct 29, 2026 EPSS Score
- Oct 30, 2026 Distribution Patch
- Oct 30, 2026 Security Advisory
- Oct 30, 2026 Security Advisory
- Oct 31, 2026 CVE Updated
- Oct 31, 2026 Distribution Patch
References
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-254f-3936-288h x_refsource_CONFIRM
- https://github.com/python-pillow/Pillow/commit/94cb11c44ff7345414da17ebfea1598a529ad9cd x_refsource_MISC
- https://github.com/python-pillow/Pillow/releases/tag/13.0.0 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-112391 advisory
- https://github.com/advisories/GHSA-254f-3936-288h advisory