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CVE-2026-44957

MEDIUM
4.3
CVSS Score
Published: June 23, 2026 at 04:14 PM UTC
Updated: October 26, 2026 at 11:10 AM UTC
1 product affected across 1 vendorAdserver

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

A missing access control check when invoking various modify methods in the XML‑RPC API of Revive Adserver 6.0.6 and earlier. The API allowed entities to be reassigned to different parent entities, leading to inconsistent ownership relationships. This issue was exploitable only in combination with CVE‑2026‑34917 or with third‑party API extensions that expose API functionality to low‑privileged users. Access control checks have been added to validate access to parent entities in the API modify methods.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Adserver· Revive
90%
v ≤ 6.0.6

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://hackerone.com/reports/3677576

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMhackerone
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-284

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