CVE-2026-121542: Red Hat Information disclosure via filesystem entitlement check bypass
This Red Hat advisory covers CVE-2026-121542. Related products: Red Hat Ceph Storage 9.
Key facts
- Vendor rating
- Low, CVSS 2.5
- CVSS vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N· base score 1.8, scored by DockerAttack vector: local. Attack complexity: low. Attack requirements: present. Privileges required: none. User interaction: active. Confidentiality impact on the vulnerable system: low. Integrity impact on the vulnerable system: none. Availability impact on the vulnerable system: none. Confidentiality impact on subsequent systems: none. Integrity impact on subsequent systems: none. Availability impact on subsequent systems: none.- Weakness
- CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- CISA SSVC
- Exploitation: none observed. Automatable: no. Technical impact: partial. CISA, .
- CISA KEV
- Not listed (catalogue checked )
- Versions named
- 19.0; 38.0
- Fixed in
- 38.1
- Source published
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Related products & platforms
Description
Information disclosure via filesystem entitlement check bypass. Red Hat rates this low (CVSS 2.5).
Weakness: CWE-22.
Affected product named by the advisory: Red Hat Ceph Storage 9.
Text from the source record.
- 19.0
- 38.0
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2026-121542
Upgrade to a fixed release named by Red Hat:
- 38.1
Vendor guidance
- Upgrade to Docker Buildx v0.38.1 or later. As a workaround, run only trusted Bake build definitions (per upstream advisory GHSA-rghq-x9hf-hc3r).
CVE-2026-121542 in other vendors' advisories
- Docker: CVE-2026-121542, low severity, fixed in 0.38.1
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