VDB
GHSA-4mq7-7q99-xhq3
GHSA-4mq7-7q99-xhq3
PUBLISHED
CVSS 7 HIGH
Record from GitHub Advisory Database · Published February 10, 2026
Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally.
Risk scores
CVSS 3.1
7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Timeline
- Feb 10, 2026 CVE Published
- May 1, 2026 Security Advisory
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln GHSA-4mq7-7q99-xhq3
vulnetix vdb fixes GHSA-4mq7-7q99-xhq3Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/GHSA-4mq7-7q99-xhq3/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-21253 advisory
- https://www.vicarius.io/vsociety/posts/cve-2026-21253-detection-script-elevation-of-privilege-vulnerability-in-mailslot-file-system url
- https://www.vicarius.io/vsociety/posts/cve-2026-21253-mitigation-script-elevation-of-privilege-vulnerability-in-mailslot-file-system url
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21253 url