# CVE-2026-108564: Revive Adserver reflected XSS in invocation-tag generation

Source: https://junglewise.ai/threats/cve-2026-108564-a-reflected-cross-site-scripting-vulnerability-in-the-invocation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-11. Updated: 2026-11-11  
License: CC BY 4.0 with a link back

CVE-2026-108564 · Severity: medium · CVSS 4.7 · Published 2026-11-11

Revive Adserver is an ad management platform used by publishers to serve and track advertisements. An unauthenticated attacker can craft a malicious URL that executes arbitrary JavaScript in the browser of an authenticated ad administrator who clicks the link, potentially allowing theft of session cookies or administrative credentials. The vulnerability only affects installations with the Direct Selection feature enabled, which is disabled by default.

Technologies: [Revive Adserver](https://junglewise.ai/threats/technologies/revive-adserver-1). Vendors: [Revive](https://junglewise.ai/threats/vendors/revive).

## 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

## References

- [https://hackerone.com/reports/3942028](https://hackerone.com/reports/3942028)

## Related threats

- [Revive Adserver authorization bypass in channel-edit.php](https://junglewise.ai/threats/cve-2026-82978-an-authorization-bypass-in-channel-edit-php-in-revive-adserver-6)
- [Revive Adserver CSRF in tracker modification](https://junglewise.ai/threats/cve-2026-77168-a-cross-site-request-forgery-vulnerability-in-tracker-invocation)
- [Revive Adserver authorization bypass in campaign-zone linking](https://junglewise.ai/threats/cve-2026-68486-an-authorization-bypass-in-campaign-zone-linking-in-revive)
- [Revive Adserver authorization bypass in website listing](https://junglewise.ai/threats/cve-2026-68485-an-authorization-bypass-in-website-index-php-in-revive-adserver-6)
- [Revive Adserver reflected cross-site scripting in popup options](https://junglewise.ai/threats/cve-2026-108565-a-reflected-cross-site-scripting-vulnerability-in-the-popup)