Vulnerability Description
Shlink through 5.1.6 fails to enforce API key role restrictions when issuing Mercure subscription tokens, allowing restricted keys to subscribe to all topics. Attackers with author-only or domain-only keys can access the mercure-info endpoint to receive visit data including referrer, user agent, geolocation, and full short URL objects for URLs outside their authorization boundary.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/shlinkio/shlink
- https://github.com/shlinkio/shlink-common/blob/main/src/Mercure/LcobucciJwtProvi
- https://github.com/shlinkio/shlink/blob/v5.1.6/module/Rest/src/Action/MercureInf
- https://github.com/shlinkio/shlink/issues/2633
- https://www.vulncheck.com/advisories/shlink-through-5.1.6-mercure-token-authoriz
- https://github.com/shlinkio/shlink/issues/2633
FAQ
What is CVE-2026-92760?
CVE-2026-92760 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Shlink through 5.1.6 fails to enforce API key role restrictions when issuing Mercure subscription tokens, allowing restricted keys to subscribe to all topics. Attackers with author-only or domain-only...
How severe is CVE-2026-92760?
CVE-2026-92760 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-92760?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.