Description
A flaw was found in libsoup. It is vulnerable to memory leaks in the soup_header_parse_quality_list() function when parsing a quality list that contains elements with all zeroes.
References10
- access.redhat.com/errata/RHSA-2025:4439
- access.redhat.com/errata/RHSA-2025:4440
- access.redhat.com/errata/RHSA-2025:4508
- access.redhat.com/errata/RHSA-2025:4538
- access.redhat.com/errata/RHSA-2025:4560
- access.redhat.com/errata/RHSA-2025:4568
- access.redhat.com/errata/RHSA-2025:4609
- access.redhat.com/errata/RHSA-2025:4624
- access.redhat.com/errata/RHSA-2025:7436
- access.redhat.com/security/cve/CVE-2025-46420
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 49 · as of 7 November 2026
- CWE
- CWE-401
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.