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VulnerabilityPublished

CVE-2026-44961: Revive Adserver · Improper Authentication – Generic

Affects Revive AdserverSource CVE Database V5

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Mentioned vulnerabilities

Not known to be exploited · CVSS 0.0 Medium.

Data as of 8 Nov 2026, 23:24 UTC

CVSS 3.0 base score
0.0Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Jun 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 8 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
ReviveAdserverAffected
  • <=6.0.6
Fixed in–

AI-suggested

The vendor has indicated that proper validation has been added to the addUser method to address the issue. Until an official patch or update is released, users should monitor vendor communications for updates and consider restricting API access to trusted users only.

Description

The XML‑RPC API addUser method has a validation bypass introduced in the fix for CVE‑2025‑55129. As a result, API users could create usernames that enabled impersonation or stored XSS attacks. Proper validation has been added where it was missing.

References

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