GHSA-qg4c-8pj4-qgw2 · Severity: critical — A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath...
A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the <sch:name path="..."/> schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors.
Conclusion & alert: CVE-2025-49794 is rated Moderate Risk (53.1/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.67%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.45% | 0.67% | +0.22% |
| 2 | 2026-04-12 | 0.06% | 0.45% | +0.39% |
| 3 | 2026-01-27 | — | 0.06% | — |
Full EPSS history (12 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.1 | 3.1 | CRITICAL |
|
3.9 | 5.2 | [email protected] |
GHSA-qg4c-8pj4-qgw2 · Severity: critical — A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath...
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2025-49794: 1 source package rows (libxml2); 4 state rows across 4 repos (3.21-main, 3.22-main, 3.23-main, edge-main); fixed 4, open 0. | https://security.alpinelinux.org/vuln/CVE-2025-49794 |
debian
|
not yet assigned | CVE-2025-49794 not yet assigned priority: Debian including 1 source packages (libxml2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2025-49794 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2025-49794 |
suse
|
high | CVE-2025-49794 severity important: SUSE including 350 source package names (0.23.1-11.20:libxml2-2-2.10.3-150500.5.29.1, 0.3.2-1.2:libxml2-2-2.10.3-150500.5.29.1, …), 1031 product×package rows across 374 product lines (Container bci/kiwi, Container bci/spack, … (374 product lines)): Fixed 769, Known Affected 221, Known Not Affected 41. | https://www.suse.com/security/cve/CVE-2025-49794/ |
ubuntu
|
medium | CVE-2025-49794 medium priority: Ubuntu including 1 source packages (libxml2), 9 status rows across 9 suites (bionic, focal, jammy, noble, oracular, plucky, trusty, upstream, xenial): released 8, ignored 1. | https://ubuntu.com/security/CVE-2025-49794 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||