All vulnerabilities
CVE-2026-78397

Link Library < 7.9.6 - Unauthenticated SSRF via Reciprocal Link Validation

Unknown Link Library
Open in ThreatlineRecord JSON
CVSS
4.0Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.16%Chance of exploitation activity in the next 30 days, higher than 5% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in7.9.6Fixed versionCVE List
Published25 Sep 2026Updated 25 Sep 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

The Link Library WordPress plugin before 7.9.6 does not validate the destination of a user-supplied URL before falling back to an unprotected fetch when its safe request is rejected, allowing unauthenticated visitors to make the site issue requests to hosts on its internal network and to learn from the response whether an internal service answered.

Versions below 7.8.8 are covered by CVE-2025-68600; this entry covers 7.8.8 through 7.9.5, where that fix was incomplete. Exploitation requires the site owner to have published the Link Library WordPress plugin before 7.9.6's public link submission form with reciprocal-link validation enabled.

Text from CVE List

Affected versions 1

  • Link Libraryaffected: 7.8.8 before 7.9.6CVE List

References 1