CVE-2026-6654
Use-After-Free and Double-Free in IntoIter::drop when element drop panics
MEDIUM
5.1
CVSS Score
Published: April 20, 2026 at 10:05 AM UTC
Updated: October 26, 2026 at 09:10 PM UTC
1 product affected across 1 vendorThin Vec
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Severity
MEDIUM5.1
Exploit prediction
EPSS 0.2%
SSVC
No known exploit
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (4)
ExploitVendor Advisory
Source: cverecord
https://github.com/mozilla/thin-vec/security/advisories/GHSA-xphw-cqx3-667jSource: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/security/cve/CVE-2026-6654Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://bugzilla.redhat.com/show_bug.cgi?id=2459689Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6654.jsonSSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
5.1MEDIUMCISA-ADP
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-415CWE-416CWE-1341
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