Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the…
Priority MEDIUM 62CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 11 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
Summary
Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted XML file. NOTE: the vendor's position is that the product does not support the legacy SAX1 interface with custom callbacks; there is a crash even without crafted input.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01079 65th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 8 advisoriesRed Hat: 11 fixed, 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
Red Hat 8 advisories
- RHSA-2024:1477 Released 2024-03-25 · Red Hat rating ModerateRed Hat OpenShift for Windows Containers 8.1.2 security update
- Red Hat OpenShift Container Platform 4.13 openshift4-wincw/windows-machine-config-operator-bundle, openshift4-wincw/windows-machine-config-rhel9-operator
- RHSA-2024:1383 Released 2024-03-19 · Red Hat rating ImportantRed Hat OpenShift Data Foundation 4.15.0 security, enhancement, & bug fix update
- RHODF 4.15 for RHEL 9 odf4/cephcsi-rhel9, odf4/mcg-core-rhel9, odf4/mcg-operator-bundle +23
- RHSA-2024:1317 Released 2024-03-18 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.57 SP3 security update
- Red Hat JBoss Core Services
Show 5 more Red Hat advisories
- RHSA-2024:0413 Released 2024-01-25 · Red Hat rating Moderatelibxml2 security update
- Red Hat Enterprise Linux AppStream EUS (v.8.6) libxml2-devel-2.9.7-13.el8_6.4
- Red Hat Enterprise Linux BaseOS EUS (v.8.6) libxml2-2.9.7-13.el8_6.4, python3-libxml2-2.9.7-13.el8_6.4
- RHSA-2024:0119 Released 2024-01-10 · Red Hat rating Moderatelibxml2 security update
- Red Hat Enterprise Linux AppStream (v. 8) libxml2-devel-2.9.7-18.el8_9
- Red Hat Enterprise Linux BaseOS (v. 8) libxml2-2.9.7-18.el8_9, python3-libxml2-2.9.7-18.el8_9
- RHSA-2023:7747 Released 2023-12-12 · Red Hat rating Moderatelibxml2 security update
- Red Hat Enterprise Linux AppStream (v. 9) libxml2-devel-2.9.13-5.el9_3
- Red Hat Enterprise Linux BaseOS (v. 9) libxml2-2.9.13-5.el9_3, python3-libxml2-2.9.13-5.el9_3
- RHSA-2023:7626 Released 2023-12-07 · Red Hat rating ImportantRed Hat JBoss Core Services Apache HTTP Server 2.4.57 SP2 security update
- Red Hat JBoss Core Services
- RHSA-2023:7544 Released 2023-11-28 · Red Hat rating Moderatelibxml2 security update
- Red Hat Enterprise Linux AppStream EUS (v.8.8) libxml2-devel-2.9.7-16.el8_8.2
- Red Hat Enterprise Linux BaseOS EUS (v.8.8) libxml2-2.9.7-16.el8_8.2, python3-libxml2-2.9.7-16.el8_8.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| RHODF 4.15 for RHEL 9 | Fixed | RHSA-2024:1383 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2024:0119 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2023:7747 |
| Red Hat Enterprise Linux AppStream EUS (v.8.6) | Fixed | RHSA-2024:0413 |
| Red Hat Enterprise Linux AppStream EUS (v.8.8) | Fixed | RHSA-2023:7544 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:0119 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2023:7747 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.6) | Fixed | RHSA-2024:0413 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.8) | Fixed | RHSA-2023:7544 |
| Red Hat JBoss Core Services | Fixed | RHSA-2023:7626 |
| Red Hat OpenShift Container Platform 4.13 | Fixed | RHSA-2024:1477 |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-39615
- 2026-10-03 Alias added: GHSA-9fj4-8443-vg2m
- 2026-10-09 Fix available: RHSA-2023:7626 · Red Hat
- 2026-10-09 Fix available: RHSA-2024:1317 · Red Hat
- 2026-10-30 Fix available: Red Hat JBoss Core Services · Red Hat
References
More xmlsoft Libxml2 vulnerabilities
- TI-2020-06117 xmlStringLenDecodeEntities in parser.c in libxml2 2.9.10 has an infinite loop in a certain end-of-file situation. CVSS 3.1HIGH 7.5
- TI-2025-05441 Libxml2: integer overflow in xmlbuildqname() leads to stack buffer overflow in libxml2 CVSS 3.1HIGH 7.5
- TI-2024-22792 An issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7. CVSS 3.1HIGH 7.5
- TI-2017-06514 libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the… CVSS 3.1HIGH 7.5
- TI-2022-19140 An issue was discovered in libxml2 before 2.10.3. CVSS 3.1HIGH 7.5
- TI-2025-23491 Out-of-bounds read in xmlsoft libxml2 CVSS 3.1HIGH 7.5
Sources
- CVE-2023-39615 · CVE Program
- CVE-2023-39615 · NVD
- FIRST EPSS
- GHSA-9fj4-8443-vg2m · GitHub Advisory Database · CC BY 4.0
- CVE-2023-39615 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences