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Vulnerability · Published Feb 4, 2024 · Assigned by mitre

CVE-2023-52426

Medium 5.5

In plain English

A medium-severity security flaw in the expat package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.4%top 66.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20expat2.6.0-r0ALPINE-CVE-2023-52426
Alpine:v3.21expat2.6.0-r0ALPINE-CVE-2023-52426
Alpine:v3.22expat2.6.0-r0ALPINE-CVE-2023-52426
Alpine:v3.23expat2.6.0-r0ALPINE-CVE-2023-52426
Alpine:v3.24expat2.6.0-r0ALPINE-CVE-2023-52426
Debian:12expatno fix listedDEBIAN-CVE-2023-52426
Debian:13expat2.6.0-1DEBIAN-CVE-2023-52426
Debian:14expat2.6.0-1DEBIAN-CVE-2023-52426
Debian:12libxmltokno fix listedDEBIAN-CVE-2023-52426
Ubuntu:22.04:LTScadaverno fix listedUBUNTU-CVE-2023-52426
Ubuntu:24.04:LTScadaverno fix listedUBUNTU-CVE-2023-52426
Ubuntu:25.10cadaverno fix listedUBUNTU-CVE-2023-52426
Ubuntu:26.04:LTScadaverno fix listedUBUNTU-CVE-2023-52426
Ubuntu:26.10cadaverno fix listedUBUNTU-CVE-2023-52426
Ubuntu:24.04:LTSexpat2.6.0-1UBUNTU-CVE-2023-52426
Ubuntu:22.04:LTSinsighttoolkit4no fix listedUBUNTU-CVE-2023-52426
Ubuntu:22.04:LTSmatanzano fix listedUBUNTU-CVE-2023-52426
Ubuntu:24.04:LTSmatanzano fix listedUBUNTU-CVE-2023-52426
Ubuntu:25.10matanzano fix listedUBUNTU-CVE-2023-52426
Ubuntu:26.04:LTSmatanzano fix listedUBUNTU-CVE-2023-52426
Ubuntu:26.10matanzano fix listedUBUNTU-CVE-2023-52426
Ubuntu:25.10swish-eno fix listedUBUNTU-CVE-2023-52426
Ubuntu:26.10swish-eno fix listedUBUNTU-CVE-2023-52426
Ubuntu:22.04:LTStdomno fix listedUBUNTU-CVE-2023-52426
Ubuntu:24.04:LTStdomno fix listedUBUNTU-CVE-2023-52426
Ubuntu:25.10tdomno fix listedUBUNTU-CVE-2023-52426
Ubuntu:26.04:LTStdomno fix listedUBUNTU-CVE-2023-52426
Ubuntu:26.10tdomno fix listedUBUNTU-CVE-2023-52426
Ubuntu:24.04:LTSwbxml2no fix listedUBUNTU-CVE-2023-52426
Ubuntu:25.10wbxml2no fix listedUBUNTU-CVE-2023-52426
Ubuntu:26.04:LTSwbxml2no fix listedUBUNTU-CVE-2023-52426
Ubuntu:26.10wbxml2no fix listedUBUNTU-CVE-2023-52426
Ubuntu:25.10xmlrpc-cno fix listedUBUNTU-CVE-2023-52426
Ubuntu:26.04:LTSxmlrpc-cno fix listedUBUNTU-CVE-2023-52426
Ubuntu:26.10xmlrpc-cno fix listedUBUNTU-CVE-2023-52426

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-776 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References