CVE-2026-42311
high
CVSS v3
7.8
CVSS v4 NEW
8.6
VIR risk
7.8
Description
Pillow has an OOB Write with Invalid PSD Tile Extents (Integer Overflow)
Predictions
Exploit likelihood
75%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Mixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Affected | — |
| sid | Fixed | 12.2.0-1 |
| forky | Fixed | 12.2.0-1 |
| bullseye | Fixed | 0 |
| bookworm | Fixed | 0 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| python | pillow | {"startIncluding":"10.3.0","endExcluding":"12.2.0"} | 12.2.0 |
References
- https://github.com/python-pillow/Pillow/commit/58f9a1d166dcb0c274807d4423522d205b0c35ea
- https://github.com/python-pillow/Pillow/pull/9520
- https://github.com/python-pillow/Pillow/releases/tag/12.2.0
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-pwv6-vv43-88gr
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-cfh3-3jmp-rvhc
- https://nvd.nist.gov/vuln/detail/CVE-2026-42311
- https://github.com/python-pillow/Pillow
- https://security-tracker.debian.org/tracker/CVE-2026-42311
- https://github.com/advisories/GHSA-pwv6-vv43-88gr
CWEs
CWE-190 CWE-787
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.