CVE-2026-92760
Shlink through 5.1.6 Mercure Token Authorization Bypass
CVSS 4.0 7.1 HIGHCVSS 3.1 6.5 MEDIUMCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-92760
PublishedShlink 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.
Read the publisher's advisoryAffected versions, risk and source history
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CVE-2026-92760 · CVE overview and exploitation status
cve-program · CVE-2026-92760
- https://github.com/shlinkio/shlink/issues/2633
- https://github.com/shlinkio/shlink
- https://github.com/shlinkio/shlink/blob/v5.1.6/module/Rest/src/Action/MercureInfoAction.php#L26-L42
- https://github.com/shlinkio/shlink-common/blob/main/src/Mercure/LcobucciJwtProvider.php#L38-L41
- https://www.vulncheck.com/advisories/shlink-through-5.1.6-mercure-token-authorization-bypass
Related changes
Linked by CVE identifierNo related changes are available here.