CVE-2026-112893
Pillow: Invalid free in FreeType glyph rendering when a stroker is active
Reported by github_m · Published October 19, 2026
Pillow is fixed in 13.0.0 (PyPI)
Pillow is a Python imaging library. From 10.0.0 until 13.0.0, Pillow can free an invalid glyph pointer during FreeType rendering with an active stroker. If FT_Load_Glyph fails, cleanup may call FT_Done_Glyph on an uninitialized or stale glyph variable. An attacker can supply a malformed font as untrusted bytes to an application that draws text with a nonzero stroke width, forcing the glyph-load failure path. This can corrupt memory or crash the process. This issue is fixed in version 13.0.0.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| Pillow | PyPI | 13.0.0 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| python-pillow | Pillow | >= 10.0.0, < 13.0.0 |
| PyPI | Pillow | 10.0.0 |
| python-pillow | Pillow | 10.0.0 |
| chainguard | nemo-rl-cuda-13.0 | 0 |
| chainguard | nemo-gym | 0 |
| chainguard | py3-pytorch-cuda-13.0 | 0 |
| chainguard | open-webui | 0 |
| chainguard | openstack-horizon-2025.2 | 0 |
| chainguard | py3-pillow | 0 |
| wolfi | open-webui | 0 |
| chainguard | apache-beam-python-3.12-sdk | 0 |
| chainguard | superset-fips-6.1 | 0 |
| wolfi | py3-pillow | 0 |
Timeline
- Oct 19, 2026 CVE Published
- Oct 20, 2026 EPSS Score (7 in total, the first dated here)
- Oct 20, 2026 Coalition ESS Score
- Oct 21, 2026 CVE Updated
- Oct 30, 2026 Security Advisory
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References
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-j4m9-6w36-pw47 x_refsource_CONFIRM
- https://github.com/python-pillow/Pillow/commit/a7416de7f3a43128179d2cf68df3240ea8dafe13 x_refsource_MISC
- https://github.com/python-pillow/Pillow/releases/tag/13.0.0 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-112893 advisory
- https://github.com/advisories/GHSA-j4m9-6w36-pw47 advisory