PatchTheCVECVE-2026-35376: A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the chcon utility of uutils coreutils during r
CVE-2026-35376 is a medium-severity flaw (CVSS 4.5) affecting coreutils. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the chcon utility of uutils coreutils during recursive operations. The implementation resolves recursive targets using a fresh path lookup (via fts_accpath) rather than binding the traversal and label application to the specific directory state encountered during traversal. Because these operations are not anchored to file descriptors, a local attacker with write access to a director
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.5 (Medium) |
| Attack vector | Local |
| Attack complexity | High |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.1% (top 99%) |
| CISA exploited list | No |
| Weakness | CWE-367 |
| Published | 2026-04-22 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-35376?
coreutils: upgrade to 0.8.0. Exact commands for each OS are on this page.
Is CVE-2026-35376 being exploited?
CVE-2026-35376 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-35376 affect?
CVE-2026-35376 affects coreutils. Severity is medium (CVSS 4.5). A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the chcon utility of uutils coreutils during recursive operations. The implementation resolves recursive targets using a fresh path lookup (via fts_accpath) rather than binding
How urgent is CVE-2026-35376?
Priority 16/100. No elevated risk signals yet.
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- CVE-2026-35358 MEDIUM 4.4 UPGRADE The cp utility in uutils coreutils, when performing recursive copies (-R), incorrectly treats character and bl