CVE-2026-6654
MEDIUMCVSS 5.1/10EPSS 0.14%
Last modified
CVE-2026-6654 is a medium-severity vulnerability rated 5.1/10 on the CVSS scale. 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.. EPSS estimates a 0.14% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thin-Vec | 0.2.15 |
References
- https://github.com/mozilla/thin-vec/security/advisories/GHSA-xphw-cqx3-667jExploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-6654?
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.
How severe is CVE-2026-6654?
CVE-2026-6654 has a CVSS score of 5.1/10 (MEDIUM severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.
How do I fix CVE-2026-6654?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-6654?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST