Quick answers
- Is CVE-2026-40779 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-40779 being exploited in the wild.
- How severe is CVE-2026-40779?
- High severity, with a CVSS score of 7.7, published 15 June 2026.
- Which products and versions are affected?
- Link Library <= 7.8.8.
- Is there a fix for CVE-2026-40779?
- A patch was published on 2026-04-22: Version 7.8.9 released to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-40779 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-40779?
- Check whether you run Link Library at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The Link Library plugin for WordPress (versions up to 7.8.8) contains a path traversal vulnerability (CWE-22) that allows authenticated users with Contributor-level privileges to delete arbitrary files on the server. The flaw likely stems from insufficient validation of file paths provided by users in a deletion function. By manipulating input parameters, a remote attacker can bypass directory restrictions to target sensitive system or application files. Successful exploitation results in a denial of service by breaking the website or removing security configurations. The issue is resolved in version 7.8.9.
Affected products
- Link Library Link Library <= 7.8.8
Timeline
- 2026-03-11: other: Reported by researcher Trương Hữu Phúc
- 2026-04-22: advisory: Initial Patchstack advisory published
- 2026-06-15: disclosed: NVD publication date
- 2026-04-22: patched: Version 7.8.9 released to address the vulnerability