Auth bypass in Abilityai Trinity
CVE-2026-108756
Abilityai Trinity through 0.9.5 contains a missing authorization vulnerability in the Telegram router that allows agent-scoped MCP API keys to perform human-only binding operations. Attackers controlling an agent, typically via prompt injection, can send messages through the owner's bot token, replace the binding with their own token, or delete it.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind/rJ2OBa8sfl (third-party-advisory)
- github.com/Abilityai/trinity/blob/e38c1c0f2567c602541c90c4c92152e99e6ead11/src/… (technical-description)
- github.com/Abilityai/trinity/blob/e38c1c0f2567c602541c90c4c92152e99e6ead11/src/… (technical-description)
- github.com/Abilityai/trinity (product)
- www.vulncheck.com/advisories/abilityai-trinity-through-0.9.5-missing-authorizat… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108756?
- CVE-2026-108756 is a medium-severity vulnerability in Abilityai Trinity, classified under Missing Authorization. CVSS score: 5.4/10. Published 2026-10-11.
- How severe is CVE-2026-108756?
- Medium severity. CVSS v3 base score is 5.4 out of 10.