EUVD-2026-83291
GHSA-5jj9-v4xp-h5h5
Severity by source
AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
Local unprivileged foothold (AV:L/PR:L), a hard-to-win TOCTOU race (AC:H) triggered by a privileged operator's action (UI:R); arbitrary-file ownership redirection yields high confidentiality and integrity impact, no availability effect.
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
Lifecycle Timeline
2DescriptionCVE.org
A flaw was found in cockpit-files. A local unprivileged attacker can exploit a race condition during directory creation with owner assignment. By controlling a writable parent directory, the attacker can replace a newly created directory with a symbolic link (symlink) before the ownership change operation (chown) is applied. This allows the attacker to redirect the ownership change to an arbitrary file, potentially leading to information disclosure or unauthorized modification of sensitive files.
AnalysisAI
A local time-of-check/time-of-use (TOCTOU) race condition in cockpit-files on Red Hat Enterprise Linux 9 and 10 allows an unprivileged local attacker to redirect a privileged chown operation to an arbitrary file by replacing a newly created directory with a symlink, resulting in potential information disclosure or unauthorized modification of sensitive files. Exploitation requires a privileged operator to trigger directory creation with owner assignment via cockpit-files inside an attacker-controlled writable parent directory, and the attacker must win a narrow timing window (CVSS 3.1: AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N, 6.0). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires a local unprivileged shell on a RHEL 9 or RHEL 10 host with cockpit-files installed and in use. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but modest-priority local privilege/integrity issue rather than a mass-exploitation threat. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patched version is identified in the provided data at time of analysis; consult the Red Hat security advisory at https://access.redhat.com/security/cve/CVE-2026-91205 and Bugzilla entry https://bugzilla.redhat.com/show_bug.cgi?id=2466442 for updated patch and mitigation guidance. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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