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Vulnerability record · CVE-2021-46141 · published 6 January 2022

CVE-2021-46141: Uriparser project uriparser use after free vulnerability

UUriparser Project · Uriparser

An issue was discovered in uriparser before 0.9.6. It performs invalid free operations in uriFreeUriMembers and uriMakeOwner.

5.5 CVSS 3.1 Medium EPSS 1.1% · top 34.9% CWE-416 · Use after free
5.5CVSS 3.1 base score, v2 4.3
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
14References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

An issue was discovered in uriparser before 0.9.6. It performs invalid free operations in uriFreeUriMembers and uriMakeOwner.

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

Affected products

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

References

LinkTags
https://blog.hartwork.org/posts/uriparser-096-with-security-fixes-released/ Third Party Advisory
https://github.com/uriparser/uriparser/issues/121 ExploitIssue TrackingPatchThird Party Advisory
https://github.com/uriparser/uriparser/pull/124 ExploitPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/01/msg00029.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO6T7WA27H7K3WI2AXUAGPW
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGIJTDNEMU2V4H3JJBQVKBR
https://www.debian.org/security/2022/dsa-5063 Third Party Advisory
https://blog.hartwork.org/posts/uriparser-096-with-security-fixes-released/ Third Party Advisory
https://github.com/uriparser/uriparser/issues/121 ExploitIssue TrackingPatchThird Party Advisory
https://github.com/uriparser/uriparser/pull/124 ExploitPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/01/msg00029.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO6T7WA27H7K3WI2AXUAGPW
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGIJTDNEMU2V4H3JJBQVKBR
https://www.debian.org/security/2022/dsa-5063 Third Party Advisory

Track CVE-2021-46141 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-46141), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.