7.5

CVE-2023-52425: libexpat_project libexpat Uncontrolled Resource Consumption

Modified
AliasesALPINE-CVE-2023-52425SUSE-SU-2024:1657-1SUSE-SU-2024:3004-1
Published 04-02-2024Last modified 15-10-2026

Vulnerability summary

CVE-2023-52425 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in libexpat_project libexpat. EPSS estimates a 2.15% chance of exploitation in the next 30 days, higher than 82.1% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
2.15%
0%100%
Low · +0.33 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 34 · Related 27
DLA-3893-1MGASA-2024-0072OPENSUSE-SU-2024:13695-1OPENSUSE-SU-2024:13790-1OPENSUSE-SU-2024:13799-1OPENSUSE-SU-2024:13800-1

Timeline

  1. 04-02-2024
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

libexpat through 2.5.0 allows a denial of service (resource consumption) because many full reparsings are required in the case of a large token for which multiple buffer fills are needed.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

2.15%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

Increase +0.33 pp

From 1.81% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Libexpat

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu14 products
  • ayttmAll versions (No fix recorded)
  • cableswigAll versions (No fix recorded)
  • cadaverAll versions (No fix recorded)
  • coin3All versions (No fix recorded)
  • expatAll versions (No fix recorded) | < 2.4.7-1ubuntu0.3 | < 2.6.0-1
Redhat13 products
  • expat< 0:2.2.5-11.el8_9.1 | < 0:2.2.5-11.el8_8.2 | < 0:2.2.5-8.el8_6.5
  • expat-debuginfo< 0:2.2.5-11.el8_9.1 | < 0:2.2.5-11.el8_8.2 | < 0:2.2.5-8.el8_6.5
  • expat-debugsource< 0:2.2.5-11.el8_9.1 | < 0:2.2.5-11.el8_8.2 | < 0:2.2.5-8.el8_6.5
  • expat-devel< 0:2.2.5-11.el8_9.1 | < 0:2.2.5-11.el8_8.2 | < 0:2.2.5-8.el8_6.5
  • xmlrpc-c< 0:1.51.0-9.el8_10
Suse11 products
  • expat&distro=SUSE Linux Enterprise Server 12 SP5< 2.1.0-21.32.1
  • expat&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP5< 2.1.0-21.32.1
  • expat&distro=SUSE Linux Enterprise Software Development Kit 12 SP5< 2.1.0-21.32.1
  • python3-base&distro=SUSE Linux Enterprise Module for Web and Scripting 12< 3.4.10-25.127.1
  • python3-base&distro=SUSE Linux Enterprise Server 12 SP5< 3.4.10-25.127.1
Opensuse10 products
  • clustershell&distro=openSUSE Tumbleweed< 1.9.3-1.1
  • python310-core&distro=openSUSE Leap 15.5< 3.10.14-150400.4.48.1
  • python310-core&distro=openSUSE Leap 15.6< 3.10.14-150400.4.48.1
  • python310-documentation&distro=openSUSE Leap 15.5< 3.10.14-150400.4.48.1
  • python310-documentation&distro=openSUSE Leap 15.6< 3.10.14-150400.4.48.1
Debian2 products
  • expat< 2.2.6-2+deb10u7 | < 2.5.0-1+deb12u2 | < 2.6.0-1
  • libxmltokAll versions (No fix recorded)
Alpine1 product
  • expat< 2.6.0-r0
Libexpat_project1 product

7 vendors · 52 products

References

33 links
Show all 33 references