PyPI/decepticon CVE-2026-61732: critical 10, EPSS 1.22%

Decepticon: Role-boundary forgery via ChatML special-token literals in web crawl output composed into LLM context

Action: Upgrade decepticon to 1.1.17 or later.

pip install decepticon==1.1.17

Affected

Fixed versions

Sources

• osv: GHSA-g5f9-3xfg-p9mf#PyPI/decepticon
• https://github.com/BitterSecurity/Decepticon/security/advisories/GHSA-g5f9-3xfg-p9mf
• https://nvd.nist.gov/vuln/detail/CVE-2026-61732
• https://github.com/BitterSecurity/Decepticon/pull/715
• https://github.com/BitterSecurity/Decepticon/commit/79ee2aaf22f4c36a5b1968f6ca3f8086b6e35b67
• https://github.com/BitterSecurity/Decepticon/releases/tag/v1.1.17
• https://github.com/PurpleAILAB/Decepticon

CVE-2026-61732 · published 2026-09-24T19:17:49Z · modified 2026-10-01T17:55:53.306958453Z · JSON