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VulnerabilityPublished

CVE-2026-92760: shlinkio shlink · Incorrect Authorization

Affects shlinkio shlinkSource CVE Database V5

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Not known to be exploited · CVSS 7.1 High.

Data as of 31 Oct 2026, 20:20 UTC

CVSS 4.0 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
shlinkioshlinkAffected
  • <=5.1.6
Fixed in–
GitHubshlinkio/shlinkpkg:github/shlinkio/shlinkOther threatsAffected
  • <=5.1.6
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until an official fix is available, restrict API key distribution and monitor for unauthorized access attempts. Avoid using author-only or domain-only keys in untrusted environments.

Description

Shlink versions up to 5.1.6 have an authorization flaw where API key role restrictions are not properly enforced when issuing Mercure subscription tokens. This allows restricted API keys, such as author-only or domain-only keys, to subscribe to all topics and access visit data beyond their intended scope. The exposed data includes referrer, user agent, geolocation, and full short URL objects for URLs outside the authorized boundary.

References

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