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CVE-2026-108559VulnerabilityPublished

Reflected Cross-site Scripting Vulnerability

Source GCVE Database

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Authoritative record:CVE-2026-108559· Medium 6.1

Not known to be exploited · CVSS 6.1 Medium · fixed in 6.0.9 : update Adserver when convenient.

Data as of 11 Nov 2026, 19:48 UTC

CVSS 3.0 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (hackerone)CVSS 3.06.1
Patch
Available – fixed in 6.0.9
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
ReviveAdserverAffected
  • <=6.0.8
Fixed in–

AI-suggested

Upgrade to Revive Adserver version 6.0.9 or later, where the vulnerability is fixed by proper HTML encoding of the frame_width and frame_height parameters. No other mitigation steps are indicated by the vendor advisory.

Description

Revive Adserver versions 6.0.8 and earlier contain a reflected cross-site scripting (XSS) vulnerability in the iframe invocation options. This flaw allows an unauthenticated attacker to execute arbitrary JavaScript in the browser of an authenticated user by tricking them into visiting a specially crafted URL. The vulnerability arises because the frame_width and frame_height parameters are included in HTML attributes without proper encoding. The issue is resolved in version 6.0.9 by applying HTML encoding to these parameters in the invocation-option form fields.

References

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