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Medium 5.1Published Apr 20, 2026
CVE-2026-6654Double-Free / Use-After-Free (UAF) in the `IntoIter::drop` and `ThinVec::clear` functions in the thin_vec crate.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Double-Free / Use-After-Free (UAF) in the `IntoIter::drop` and `ThinVec::clear` functions in the thin_vec crate. A panic in `ptr::drop_in_place` skips setting the length to zero.
- CVSS
- 5.1 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Weakness (CWE)
- CWE-415, CWE-416, CWE-1341
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jul 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
mozilla thin-vec mozilla:thin-vec | 0.2.15 | NVD |
References
- https://github.com/mozilla/thin-vec/security/advisories/GHSA-xphw-cqx3-667jexploit, vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-6654
- https://bugzilla.redhat.com/show_bug.cgi?id=2459689
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6654.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.