Vulnerability · Published Sep 17, 2026 · Assigned by VulnCheck

CVE-2026-92984HUBzero CMS through 2.2.32 Session Fixation via Query-String Session Identifier

High 8.1

In plain English

A high-severity session fixation in hubzero-cms from hubzero. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.5%top 59.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

HUBzero CMS through 2.2.32 accepts session identifiers from query strings and request variables instead of cookies alone, allowing unauthenticated attackers to fixate victim sessions. Attackers can obtain a valid session identifier, send victims a crafted link containing it, and replay the identifier after the victim authenticates to hijack their account and access.

Affected products (as reported)

Vendor	Product	Versions
hubzero	hubzero-cms	0 – through 2.2.32

Weakness: CWE-384 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

References

Patch Commit patch
https://github.com/hubzero/hubzero-cms product
https://github.com/hubzero/hubzero-cms/blob/v2.2.32/core/libraries/Hubzero/Session/Manager.php#L123-L132 technical-description
VulnCheck Advisory: HUBzero CMS through 2.2.32 Session Fixation via Query-String Session Identifier third-party-advisory