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Fencer Intel
medium 4.1

CVE-2026-78394 json

Link Library < 7.9.6 - Contributor+ Path Traversal via 'filepath' Parameter

published last mo. modified last mo. also EUVD-2026-86528

cvss
4.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

The Link Library WordPress plugin before 7.9.6 does not sanitize a user-supplied destination folder before writing a generated image to disk, allowing users with the Contributor role and above to create directories and write or overwrite image files anywhere the web server can write, including outside the site's document root.

The written file name is always numeric with a fixed image extension, so executable code cannot be planted this way.

Patch / fix

  • Unknown Link Library 7.9.6

Is CVE-2026-78394 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last mo.

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/9da07b4f-5332-4ba5-8a34-6f2ed303b62c/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 4.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N
CNA 3.1 4.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N

Affected products

  • Unknown Link Library

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.