Quick answers
- Is CVE-2026-108564 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-108564 being exploited in the wild.
- How severe is CVE-2026-108564?
- Medium severity, with a CVSS score of 4.7, published 11 November 2026.
- Which products and versions are affected?
- Revive Adserver 6.0.8 and earlier.
- Is there a fix for CVE-2026-108564?
- Yes: fixed in Revive Adserver 6.0.9. Until then: Disable the Direct Selection feature until the system can be upgraded to version 6.0.9. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-108564 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-108564?
- Check whether you run Revive Adserver 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: Revive Adserver 6.0.9
Disable the Direct Selection feature until the system can be upgraded to version 6.0.9.
Technical details
A reflected XSS vulnerability exists in the invocation-tag generation interface where banner identifier values are not properly HTML-encoded in form fields when Direct Selection is enabled. An unauthenticated attacker can craft a URL containing malicious JavaScript in the banner identifier parameter; when an authenticated user visits the URL, the unencoded payload executes in their browser with the user's privileges.
Affected products
- Revive Adserver 6.0.8 and earlier
Timeline
- 2026-11-11: disclosed