---
id: CVE-2026-92984
title: >-
  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
summary: >-
  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…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-384
vendor: hubzero
product: hubzero-cms
affected:
  - hubzero-cms <= 2.2.32
published: '2026-09-17'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T20:53:07.383'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92984'
references:
  - url: 'https://github.com/hubzero/hubzero-cms'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/hubzero/hubzero-cms/blob/v2.2.32/core/libraries/Hubzero/Session/Manager.php#L123-L132
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/hubzero/hubzero-cms/commit/e60e8ebee5e1d38b1db1fc41bd9164b265b24356
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/hubzero-cms-through-2.2.32-session-fixation-via-query-string-session-identifier
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00464
epssPercentile: 0.40001
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-21T20:43:08.724355Z'
ingestedAt: '2026-09-17T15:20:39.002Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.