Privilege-escalation in OpenStack identity middleware used broadly in private/public clouds; impactful to cloud operators and tenant isolation.
CVE-2026-115642
Privilege escalation in OpenStack keystonemiddleware via X-Service-Token header
Is CVE-2026-115642 being exploited?
Not confirmed. CVE-2026-115642 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.51% probability of exploitation in the next 30 days.
How severe is CVE-2026-115642?
CVE-2026-115642 is rated High with a CVSS score of 8.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-115642?
Yes. A fix has been recorded for CVE-2026-115642. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-115642 affect?
CVE-2026-115642 affects OpenStack keystonemiddleware < 13.0.2, Keystone deployments using keystonemiddleware. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-115642?
Upgrade keystonemiddleware to 13.0.2+; or block/strip X-Service-Token and rotate app credentials
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Bypass application-credential restrictions using a custom X-Service-Token header, enabling privilege escalation in OpenStack identity middleware.
Immediate action required
- affected< 10.12.2
- affected>= 11.0.0 and < 12.0.1
- affected>= 13.0.0 and < 13.0.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
cisa ssvc
- exploitation
- none
- automatable
- no
- technical impact
- total
Assessed by CISA 30 Oct 2026 (SSVC 2.0.3).
timeline
- 30 Oct 2026Published
- 30 Oct 2026CISA SSVC assessment: exploitation none · same day later
- 30 Oct 2026CVE record last updated · same day later
- 2 Nov 2026Analysed by vulneraibility.com · 3 days later
- Linkbugs.launchpad.net /keystonemiddleware/+bug/2162748
- Linkgithub.com /openstack/keystonemiddleware/tags
- Linkopenwall.com /lists/oss-security/2026/10/29/2
- Linkopenwall.com /lists/oss-security/2026/10/29/2
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.