CVE-2026-78397
MediumCVSS 4.0Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
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. This allows 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.
Risk Assessment
An attacker can use the site to scan and probe the internal network (SSRF), disclosing information about internal services. This may facilitate further attacks on internal infrastructure.
Recommendation
Upgrade the Link Library plugin to version 7.9.6 or later. Until then, consider disabling the public link submission form with reciprocal-link validation enabled.
Other vulnerabilities in Link Library WordPress plugin
See all- CVE-2026-78396Medium
The Link Library WordPress plugin before 7.10.0 does not verify that a requested link belongs to the settings set whose display template is used to render it. This allows unauthenticated users to disclose the telephone number, e-mail address and submitter name stored with links that the settings set is configured not to display.
- CVE-2026-78395Medium
The Link Library WordPress plugin before 7.10.0 does not re-check the selected library's own login requirement when processing its front-end link submission. This allows unauthenticated users to submit links to a library configured to require login by reusing a form token obtained from another library that does not.
- CVE-2026-78394Medium
The Link Library WordPress plugin before 7.9.6 does not sanitize a user-supplied destination folder before writing a generated image to disk. This allows 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.
- CVE-2026-78393Medium
The Link Library WordPress plugin before 7.9.6 does not properly escape some parameters before outputting them in the addresses of links it generates on its front-end directory pages. This leads to Reflected Cross-Site Scripting (XSS) which could be used against any visitor, including logged-in administrators.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS