PyPI/pillow CVE-2026-59203: medium 5.3, EPSS 0.40%

Pillow EpsImagePlugin negative %%BeginBinary byte count causes infinite loop denial of service

Action: Upgrade pillow to 12.3.0 or later.

pip install pillow==12.3.0

Affected

Fixed versions

Sources

• osv: GHSA-pg7v-jwj7-p798
• https://github.com/python-pillow/Pillow/security/advisories/GHSA-pg7v-jwj7-p798
• https://nvd.nist.gov/vuln/detail/CVE-2026-59203
• https://github.com/python-pillow/Pillow/pull/9708
• https://github.com/python-pillow/Pillow/commit/03992618118b4a76b6163cd72ab5ecd684133b83
• https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2026-3452.yaml
• https://github.com/python-pillow/Pillow
• https://github.com/python-pillow/Pillow/releases/tag/12.3.0

CVE-2026-59203 · published 2026-07-20T23:11:51Z · modified 2026-09-10T03:50:52.876709782Z · JSON