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.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-863"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92760.json"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "5.1.6"
},
{
"fixed": "5.1.6"
}
],
"source": [
"AFFECTED_FIELD",
"DESCRIPTION"
]
}