CVE-2024-34459: An issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7.
Noroxi assessment
Priority: Monitor (action score 31/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 1.8% (FIRST EPSS); higher than 78.4% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- According to CISA the attack is automatable: targets can be found by mass scanning.
- Fixed version: azl3 libxml2 2.11.5-3 on Azure Linux 3.0 2.11.5-3; azl3 libxml2 2.11.5-5 on Azure Linux 3.0 2.11.5-3; cbl2 libxml2 2.10.4-3 on CBL Mariner 2.0 2.10.4-3.
Low priority for now. Upgrade to azl3 libxml2 2.11.5-3 on Azure Linux 3.0 2.11.5-3; azl3 libxml2 2.11.5-5 on Azure Linux 3.0 2.11.5-3; cbl2 libxml2 2.10.4-3 on CBL Mariner 2.0 2.10.4-3 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
An issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7. Formatting error messages with xmllint --htmlout can result in a buffer over-read in xmlHTMLPrintFileContext in xmllint.c.
- BDU:2026-08991
- ALSA-2026:26354
- ALSA-2026:28234
- ALSA-2026:28254
- DLA-4251-1
- DSA-5949-1
- openSUSE-SU-2024:13971-1
- RHSA-2026:26354
- RHSA-2026:27736
- RHSA-2026:27737
- RHSA-2026:27739
- RHSA-2026:28234
- RHSA-2026:28254
- RHSA-2026:33632
- RHSA-2026:33633
- RHSA-2026:33634
- RHSA-2026:33635
- RLSA-2026:26354
- RLSA-2026:28234
- RLSA-2026:28254
- Published
- May 14, 2024
- Updated
- Oct 15, 2026
- EPSS
- 1.8% · 78th percentile
- CWE
- CWE-122
Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 1.8%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| xmlsoft | libxml2 | cpe:2.3:a:xmlsoft:libxml2 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- xmlsoft libxml2before 2.11.8
- xmlsoft libxml22.12.0 and later · before 2.12.7
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:10 | libxml2 | before 2.12.5-10.el10_2.1 | 2.12.5-10.el10_2.1 |
| AlmaLinux:10 | libxml2-devel | before 2.12.5-10.el10_2.1 | 2.12.5-10.el10_2.1 |
| AlmaLinux:10 | libxml2-static | before 2.12.5-10.el10_2.1 | 2.12.5-10.el10_2.1 |
| AlmaLinux:10 | python3-libxml2 | before 2.12.5-10.el10_2.1 | 2.12.5-10.el10_2.1 |
| AlmaLinux:8 | libxml2 | before 2.9.7-21.el8_10.5 | 2.9.7-21.el8_10.5 |
| AlmaLinux:8 | libxml2-devel | before 2.9.7-21.el8_10.5 | 2.9.7-21.el8_10.5 |
| AlmaLinux:8 | python3-libxml2 | before 2.9.7-21.el8_10.5 | 2.9.7-21.el8_10.5 |
| AlmaLinux:9 | libxml2 | before 2.9.13-14.el9_8.1 | 2.9.13-14.el9_8.1 |
| AlmaLinux:9 | libxml2-devel | before 2.9.13-14.el9_8.1 | 2.9.13-14.el9_8.1 |
| AlmaLinux:9 | python3-libxml2 | before 2.9.13-14.el9_8.1 | 2.9.13-14.el9_8.1 |
| Alpine:v3.18 | libxml2 | from 2.12.0 · before 2.11.8-r0 | 2.11.8-r0 |
| Alpine:v3.20 | libxml2 | from 2.12.0 · before 2.12.7-r0 | 2.12.7-r0 |
| Debian:11 | libxml2 | before 2.9.10+dfsg-6.7+deb11u8 | 2.9.10+dfsg-6.7+deb11u8 |
| Debian:12 | libxml2 | before 2.9.14+dfsg-1.3~deb12u2 | 2.9.14+dfsg-1.3~deb12u2 |
| Debian:13 | libxml2 | before 2.12.7+dfsg+really2.9.14-0.4 | 2.12.7+dfsg+really2.9.14-0.4 |
| openSUSE:Leap 15.5 | libxml2 | before 2.10.3-150500.5.17.1 | 2.10.3-150500.5.17.1 |
| openSUSE:Leap 15.5 | libxml2-python | before 2.10.3-150500.5.17.1 | 2.10.3-150500.5.17.1 |
| openSUSE:Leap 15.5 | python-libxml2-python | before 2.9.7-150000.3.70.1 | 2.9.7-150000.3.70.1 |
| openSUSE:Tumbleweed | libxml2 | before 2.12.7-1.1 | 2.12.7-1.1 |
| Red Hat:enterprise_linux_eus:10.0 | libxml2 | before 0:2.12.5-9.el10_0.1 | 0:2.12.5-9.el10_0.1 |
| Red Hat:enterprise_linux_eus:10.0 | libxml2-debuginfo | before 0:2.12.5-9.el10_0.1 | 0:2.12.5-9.el10_0.1 |
| Red Hat:enterprise_linux_eus:10.0 | libxml2-debugsource | before 0:2.12.5-9.el10_0.1 | 0:2.12.5-9.el10_0.1 |
| Red Hat:enterprise_linux_eus:10.0 | libxml2-devel | before 0:2.12.5-9.el10_0.1 | 0:2.12.5-9.el10_0.1 |
| Red Hat:enterprise_linux_eus:10.0 | libxml2-static | before 0:2.12.5-9.el10_0.1 | 0:2.12.5-9.el10_0.1 |
+69
Same product
xmlsoft: all recordsOther highest-scoring records for the same primary product.
- CVE-2008-3529Heap-based buffer overflow in the xmlParseAttValueComplex function in parser.c in libxml2 before 2.7.0 allows context-dependent attackers to47Plan
- CVE-2017-7376Buffer overflow in libxml2 allows remote attackers to execute arbitrary code by leveraging an incorrect limit for port values when handling 46Plan
- CVE-2022-40303An issue was discovered in libxml2 before 2.10.3.42Plan
Published before and after this one in the same product
- ← EarlierCVE-2023-45322Oct 6, 2023 · libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails.26Monitor
- ← EarlierCVE-2024-25062Feb 4, 2024 · An issue was discovered in libxml2 before 2.11.7 and 2.12.x before 2.12.5.30Monitor
- Later →CVE-2024-40896Dec 23, 2024 · In libxml2 2.11 before 2.11.9, 2.12 before 2.12.9, and 2.13 before 2.13.3, the SAX parser can produce events for external entities even if c36Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| azl3 libxml2 2.11.5-3 on Azure Linux 3.0 | 2.11.5-3 · CBL-Mariner Releases | Microsoft (MSRC) |
| azl3 libxml2 2.11.5-5 on Azure Linux 3.0 | 2.11.5-3 · CBL-Mariner Releases | Microsoft (MSRC) |
| cbl2 libxml2 2.10.4-3 on CBL Mariner 2.0 | 2.10.4-3 · CBL-Mariner Releases | Microsoft (MSRC) |
| cbl2 libxml2 2.10.4-6 on CBL Mariner 2.0 | 2.10.4-3 · CBL-Mariner Releases | Microsoft (MSRC) |
| almalinux:libxml2 | 2.9.7-21.el8_10.5 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libxml2-devel | 2.9.7-21.el8_10.5 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libxml2-static | 2.12.5-10.el10_2.1 · AlmaLinux:10 | Package registry (OSV) |
| almalinux:python3-libxml2 | 2.9.7-21.el8_10.5 · AlmaLinux:8 | Package registry (OSV) |
| alpine:libxml2 | 2.11.8-r0 · Alpine:v3.18 | Package registry (OSV) |
| debian:libxml2 | 2.9.14+dfsg-1.3~deb12u2 · Debian:12 | Package registry (OSV) |
| opensuse:libxml2 | 2.10.3-150500.5.17.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:libxml2-python | 2.10.3-150500.5.17.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:python-libxml2-python | 2.9.7-150000.3.70.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| red hat:libxml2 | 0:2.9.7-21.el8_10.5 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:libxml2-debuginfo | 0:2.9.7-21.el8_10.5 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libxml2-debugsource | 0:2.9.7-21.el8_10.5 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libxml2-devel | 0:2.9.7-21.el8_10.5 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libxml2-static | 0:2.12.5-10.el10_2.1 · Red Hat:enterprise_linux:10.2 | Package registry (OSV) |
| red hat:python3-libxml2 | 0:2.9.7-21.el8_10.5 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:python3-libxml2-debuginfo | 0:2.9.7-21.el8_10.5 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| rocky linux:libxml2 | 0:2.9.7-21.el8_10.5 · Rocky Linux:8 | Package registry (OSV) |
| suse:libxml2 | 2.9.7-150000.3.70.1 · SUSE:Linux Enterprise Micro 5.1 | Package registry (OSV) |
| suse:libxml2-python | 2.10.3-150500.5.17.1 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:libxml2-python | 2.9.14-150400.5.32.1 · SUSE:Linux Enterprise Micro 5.3 | Package registry (OSV) |
| suse:python-libxml2 | 2.9.4-46.75.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
| suse:python-libxml2-python | 2.9.7-150000.3.70.1 · SUSE:Linux Enterprise Micro 5.2 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
No history yet (it accumulates with the daily EPSS job).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-122 · Heap-based Buffer OverflowCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (9 more)Show less
- gitlab.gnome.org/GNOME/libxml2/-/releases/v2.12.7
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5HVUXKYTBWT3G5DEEQX62STJQBY367NL/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/INKSSLW5VMZIXHRPZBAW4TJUX5SQKARG/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VRDJCNQP32LV56KESUQ5SNZKAJWSZZRI/
- lists.debian.org/debian-lts-announce/2025/07/msg00014.html
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5HVUXKYTBWT3G5DEEQX62STJQBY367NL/
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/INKSSLW5VMZIXHRPZBAW4TJUX5SQKARG/
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VRDJCNQP32LV56KESUQ5SNZKAJWSZZRI/
- cert-portal.siemens.com/productcert/html/ssa-398330.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.