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NVD / CVE Program· CNA mitre

CVE-2024-40896: 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 c

Noroxi assessment

Priority: Monitor (action score 36/100)

  • 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: 1.2% (FIRST EPSS); higher than 68.4% 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: libxml2 libxml2 2.11.9, 2.12.9, 2.13.3; azl3 libxml2 2.11.5-2 on Azure Linux 3.0 2.11.5-2; azl3 libxml2 2.11.5-5 on Azure Linux 3.0 2.11.5-2.

Low priority for now. Upgrade to libxml2 libxml2 2.11.9, 2.12.9, 2.13.3; azl3 libxml2 2.11.5-2 on Azure Linux 3.0 2.11.5-2; azl3 libxml2 2.11.5-5 on Azure Linux 3.0 2.11.5-2 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

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 custom SAX handlers try to override entity content (by setting "checked"). This makes classic XXE attacks possible.

CriticalCVSS 9.1 · v3.1—No exploit Fix available
Published
Dec 23, 2024
Updated
Jun 17, 2026
EPSS
1.2% · 68th percentile

Report tools

JSON

Action score

36

Monitor

Low priority for now.

CVSS
36 / 40 · 9.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

CISA SSVC decision

Exploitation
none
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.

Follow CVE-2024-40896

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

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Affected 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.

VendorProduct
xmlsoftlibxml2
netapphci compute node
netappsolidfire \& hci management node
netappsolidfire \& hci storage node
netapph300s firmware
netapph300s
netapph410s firmware
netapph410s
netapph500s firmware
netapph500s
netapph700s firmware
netapph700s

and 2 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • netapp h300s firmwareall versions
  • netapp h410c firmwareall versions
  • netapp h410s firmwareall versions
  • netapp h500s firmwareall versions
  • netapp h700s firmwareall versions
  • netapp hci compute nodeall versions
  • netapp solidfire & hci management nodeall versions
  • netapp solidfire & hci storage nodeall versions
  • xmlsoft libxml22.11.0 and later · before 2.11.9
  • xmlsoft libxml22.13.0 and later · before 2.13.3
  • xmlsoft libxml22.12.0 and later · before 2.12.9

Versions reported by the vendor

Affected version ranges reported by the assigning authority (mitre). Independent of NVD's CPE analysis and usually ahead of it.

  • libxml2 libxml2

    • 2.11.0 and later · before 2.11.9affected · semver
    • 2.12.0 and later · before 2.12.9affected · semver
    • 2.13.0 and later · before 2.13.3affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
openSUSE:Leap 15.6qt6-webenginebefore 6.6.3-bp156.2.3.16.6.3-bp156.2.3.1
openSUSE:Leap 15.6qt6-webengine-docsbefore 6.6.3-bp156.2.3.16.6.3-bp156.2.3.1
openSUSE:Tumbleweedlibxml2before 2.12.9-1.12.12.9-1.1
openSUSE:Tumbleweedqt6-webenginebefore 6.8.1-2.16.8.1-2.1
Red Hat:enterprise_linux:10.0libxml2before 0:2.12.5-5.el10_00:2.12.5-5.el10_0
Red Hat:enterprise_linux:10.0libxml2-debuginfobefore 0:2.12.5-5.el10_00:2.12.5-5.el10_0
Red Hat:enterprise_linux:10.0libxml2-debugsourcebefore 0:2.12.5-5.el10_00:2.12.5-5.el10_0
Red Hat:enterprise_linux:10.0libxml2-develbefore 0:2.12.5-5.el10_00:2.12.5-5.el10_0
Red Hat:enterprise_linux:10.0libxml2-staticbefore 0:2.12.5-5.el10_00:2.12.5-5.el10_0
Red Hat:enterprise_linux:10.0python3-libxml2before 0:2.12.5-5.el10_00:2.12.5-5.el10_0
Red Hat:enterprise_linux:10.0python3-libxml2-debuginfobefore 0:2.12.5-5.el10_00:2.12.5-5.el10_0
SUSE:Linux Micro 6.0libxml2before 2.11.6-4.12.11.6-4.1
SUSE:Linux Micro 6.1libxml2before 2.11.6-slfo.1.1_5.12.11.6-slfo.1.1_5.1
SUSE:Package Hub 15 SP6qt6-webenginebefore 6.6.3-bp156.2.3.16.6.3-bp156.2.3.1
SUSE:Package Hub 15 SP6qt6-webengine-docsbefore 6.6.3-bp156.2.3.16.6.3-bp156.2.3.1

Same product

xmlsoft: all records

Other 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 to
    47Plan
  • 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-2024-25062Feb 4, 2024 · An issue was discovered in libxml2 before 2.11.7 and 2.12.x before 2.12.5.
    30Monitor
  • ← EarlierCVE-2024-34459May 14, 2024 · An issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7.
    31Monitor
  • Later →CVE-2022-49043Jan 26, 2025 · xmlXIncludeAddNode in xinclude.c in libxml2 before 2.11.0 has a use-after-free.
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
libxml2 libxml22.11.9Vendor (CNA)
libxml2 libxml22.12.9Vendor (CNA)
libxml2 libxml22.13.3Vendor (CNA)
azl3 libxml2 2.11.5-2 on Azure Linux 3.02.11.5-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 libxml2 2.11.5-5 on Azure Linux 3.02.11.5-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
opensuse:libxml22.12.9-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:qt6-webengine6.6.3-bp156.2.3.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:qt6-webengine6.8.1-2.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:qt6-webengine-docs6.6.3-bp156.2.3.1 · openSUSE:Leap 15.6Package registry (OSV)
red hat:libxml20:2.12.5-5.el10_0 · Red Hat:enterprise_linux:10.0Package registry (OSV)
red hat:libxml2-debuginfo0:2.12.5-5.el10_0 · Red Hat:enterprise_linux:10.0Package registry (OSV)
red hat:libxml2-debugsource0:2.12.5-5.el10_0 · Red Hat:enterprise_linux:10.0Package registry (OSV)
red hat:libxml2-devel0:2.12.5-5.el10_0 · Red Hat:enterprise_linux:10.0Package registry (OSV)
red hat:libxml2-static0:2.12.5-5.el10_0 · Red Hat:enterprise_linux:10.0Package registry (OSV)
red hat:python3-libxml20:2.12.5-5.el10_0 · Red Hat:enterprise_linux:10.0Package registry (OSV)
red hat:python3-libxml2-debuginfo0:2.12.5-5.el10_0 · Red Hat:enterprise_linux:10.0Package registry (OSV)
suse:libxml22.11.6-4.1 · SUSE:Linux Micro 6.0Package registry (OSV)
suse:qt6-webengine6.6.3-bp156.2.3.1 · SUSE:Package Hub 15 SP6Package registry (OSV)
suse:qt6-webengine-docs6.6.3-bp156.2.3.1 · SUSE:Package Hub 15 SP6Package 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, 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
none
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-611 · Improper Restriction of XML External Entity Reference

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records