CVE-2022-49043

xmlXIncludeAddNode in xinclude.c in libxml2 before 2.11.0 has a use-after-free.

Published: 2025-01-26 Last update: 2025-11-03 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-49043 is rated Moderate Risk (48.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.22%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-49043

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 2026-03-06 0.10% 0.22% +0.12%
2 2026-03-02 0.03% 0.10% +0.07%
3 2025-11-21 — 0.03% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-49043

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.1 HIGH
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.4 6.0 [email protected]
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2022-49043

OS Trackers for CVE-2022-49043

vendor priority summary link
alpine high CVE-2022-49043: 1 source package rows (libxml2); 74 state rows across 5 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 0, open 74. https://security.alpinelinux.org/vuln/CVE-2022-49043
debian not yet assigned CVE-2022-49043 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-2022-49043
redhat medium — https://access.redhat.com/security/cve/CVE-2022-49043
suse high CVE-2022-49043 severity important: SUSE including 343 source package names (0.23:libxml2-2-2.10.3-150500.5.20.1, 0.3.2-1.2:libxml2-2-2.10.3-150500.5.20.1, …), 1052 product×package rows across 310 product lines (Container bci/kiwi, Container bci/php, … (310 product lines)): Fixed 580, Known Not Affected 251, Known Affected 221. https://www.suse.com/security/cve/CVE-2022-49043/
ubuntu medium CVE-2022-49043 medium priority: Ubuntu including 1 source packages (libxml2), 8 status rows across 8 suites (bionic, focal, jammy, noble, oracular, trusty, upstream, xenial): released 6, needs-triage 1, not-affected 1. https://ubuntu.com/security/CVE-2022-49043

Affected software / configurations for CVE-2022-49043

Vendor Product Version Raw CPE
xmlsoft libxml2 < 2.11.0 cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*

References for CVE-2022-49043

cvelogic Threat Intelligence