Medium severity · published Jun 23, 2026
CVE-2026-34917
Low‑privileged session IDs generated for the web admin console could be reused in the XML‑RPC API, whose authentication is normally restricted to admin users
4.3
CVSS
0.4%
EPSS
No
On KEV
Description
Low‑privileged session IDs generated for the web admin console could be reused in the XML‑RPC API, whose authentication is normally restricted to admin users. An attacker could leverage this to gain unauthorised access and exploit API‑level vulnerabilities. The session context (web/API) is now recorded along with other session data, preventing session IDs from being used interchangeably.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AD
Adserver · Revive
through 6.0.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34917
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-34917
hackerone.com
https://hackerone.com/reports/3672641
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