HIGH 7.1 NVD
CVE-2026-92760
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. A
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.
References
- https://github.com/shlinkio/shlink
- https://github.com/shlinkio/shlink-common/blob/main/src/Mercure/LcobucciJwtProvider.php#L3
- https://github.com/shlinkio/shlink/blob/v5.1.6/module/Rest/src/Action/MercureInfoAction.ph
- https://github.com/shlinkio/shlink/issues/2633
- https://www.vulncheck.com/advisories/shlink-through-5.1.6-mercure-token-authorization-bypa
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-09-16 via NVD.
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