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Vulnerability record · CVE-2021-3762 · published 3 March 2022

CVE-2021-3762: Redhat clair path traversal vulnerability

Redhat · Clair

A directory traversal vulnerability was found in the ClairCore engine of Clair. An attacker can exploit this by supplying a crafted container image which, when scanned by Clair, allows for arbitrary file write on the filesystem, potentially allowing for remote code execution.

9.8 CVSS 3.1 Critical EPSS 4.8% · top 8.3% CWE-22 · Path traversal
9.8CVSS 3.1 base score, v2 7.5
4.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A directory traversal vulnerability was found in the ClairCore engine of Clair. An attacker can exploit this by supplying a crafted container image which, when scanned by Clair, allows for arbitrary file write on the filesystem, potentially allowing for remote code execution.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.redhat.com/show_bug.cgi?id=2000795 Issue TrackingPatchThird Party Advisory
https://github.com/quay/clair/pull/1379 PatchThird Party Advisory
https://github.com/quay/clair/pull/1380 PatchThird Party Advisory
https://github.com/quay/claircore/commit/691f2023a1720a0579e688b69a2f4bfe1f4b7821 PatchThird Party Advisory
https://github.com/quay/claircore/pull/478 PatchThird Party Advisory
https://vulmon.com/exploitdetails?qidtp=maillist_oss_security&qid=d19fce9ede06e13dfb5630ece7f14f83 ExploitThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2000795 Issue TrackingPatchThird Party Advisory
https://github.com/quay/clair/pull/1379 PatchThird Party Advisory
https://github.com/quay/clair/pull/1380 PatchThird Party Advisory
https://github.com/quay/claircore/commit/691f2023a1720a0579e688b69a2f4bfe1f4b7821 PatchThird Party Advisory
https://github.com/quay/claircore/pull/478 PatchThird Party Advisory
https://vulmon.com/exploitdetails?qidtp=maillist_oss_security&qid=d19fce9ede06e13dfb5630ece7f14f83 ExploitThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-3762), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.