Quick answers
- Is CVE-2026-109686 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-109686 being exploited in the wild.
- How severe is CVE-2026-109686?
- Critical severity, with a CVSS score of 9.8, published 15 October 2026.
- Which products and versions are affected?
- Link Whisper INC Link Whisper Free through 0.9.7.
- Is there a fix for CVE-2026-109686?
- Yes: fixed in 0.9.8. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-109686 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-109686?
- Check whether you run Link Whisper INC Link Whisper Free 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.
How to fix
- Fixed in: 0.9.8
Technical details
The vulnerability is a PHP object injection (deserialization of untrusted data) in Link Whisper Free versions ≤0.9.7. It requires authentication as a contributor or higher privilege level. An attacker can manipulate serialized PHP objects to trigger unintended code execution on the server through the plugin's unsafe handling of unserialized data.
Affected products
- Link Whisper INC Link Whisper Free through 0.9.7
Timeline
- 2026-10-15: disclosed
- 2026-10-13: patched