CVE-2026-42311

unknowncovered by 1 sourcefirst seen 2026-06-21

Multiple security vulnerabilities have been discovered in Pillow, a Python imaging library, which could result in denial of service or the execution of arbitrary code if malformed files are processed. https://security-tracker.debian.org/tracker/DSA-6357-1

CSIRTS triage

What: Multiple vulnerabilities could result in denial of service or the execution of arbitrary code when processing malformed files.
Who is affected: Deployments of Pillow are affected.
Urgency: Remediation is urgent due to the potential for arbitrary code execution.
Action: Update to the latest version of Pillow.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Low exploitation risk0.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.

Advisory coverage (1)

unknownDSA-6357-1 pillow - security updatedebian · 2026-06-21

External references

NVD record for CVE-2026-42311

CVE.org record

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