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VulnerabilityPublished Updated

CVE-2026-43002: OpenStack Horizon has Incorrect Behavior Order

Affects horizonSource GCVE Database

0

Mentioned vulnerabilities

Authoritative record:CVE-2026-43002· Medium 5.3

Not known to be exploited · CVSS 5.3 Medium : upgrade to 25.7.3 when convenient.

Data as of 27 Oct 2026, 00:07 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 25.7.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade horizon to 25.7.3.

Affected software

ProductAffectedFixed in
PyPIhorizonAffected
  • >=25.6 <25.7.3
Fixed in
  • 25.7.3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

An issue was discovered in OpenStack Horizon 25.6 and 25.7 before 25.7.3. There is a write operation to the session storage backend before authentication and thus storage can be exhausted by unauthenticated requests. This is a regression of the CVE-2014-8124 fix.

References

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