CVE-2026-78394 — MEDIUM (4.1)

Vulnerability Description

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.

CVSS Score

4.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-22

References

https://wpscan.com/vulnerability/9da07b4f-5332-4ba5-8a34-6f2ed303b62c/

FAQ

What is CVE-2026-78394?

CVE-2026-78394 is a vulnerability with a CVSS score of 4.1 (MEDIUM). 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 crea...

How severe is CVE-2026-78394?

CVE-2026-78394 has been rated MEDIUM with a CVSS base score of 4.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-78394?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.