CVE-2023-45322Public exploitNetwork attack vector

Process crash via failed allocation during DTD copying

Published Oct 6, 2023 · Updated Nov 3, 2025

Use-after-free in GNOME libxml2 2.11.5 and earlier allows remote attackers to crash an application that processes crafted XML. During DTD copying, xmlStaticCopyNodeList assigns the copied DTD to doc->intSubset before copying finishes; an allocation-error cleanup frees that DTD but leaves the document pointer dangling for xmlUnlinkNode to access. Reachability requires DTD copying, user interaction, and a separate memory-allocation failure; the bounded impact is a process crash.

CVSS severity6.5
Medium
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in GNOME libxml2 2.11.5 and earlier allows remote attackers to crash an application that processes crafted XML. During DTD copying, xmlStaticCopyNodeList assigns the copied DTD to doc->intSubset before copying finishes; an allocation-error cleanup frees that DTD but leaves the document pointer dangling for xmlUnlinkNode to access. Reachability requires DTD copying, user interaction, and a separate memory-allocation failure; the bounded impact is a process crash.

The record

CVE
CVE-2023-45322
Published
Oct 6, 2023
Updated
Nov 3, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-416
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

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Technologies

Your stack

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Your stack

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