CVE catalog
CVE-2013-0340
libxmltok: CVE-2013-0340
- Severity
- Critical · CVSS 9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 19.43% · Oct 22, 2026
expat before version 2.4.0 does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | expat | sid | 2.9.0-1 | fixed |
| Debian | expat | forky | 2.9.0-1 | fixed |
| Debian | expat | trixie | 2.8.3-1~deb13u1 | fixed |
| Debian | expat | trixie-security | 2.9.0-1~deb13u1 | fixed |
| Debian | expat | bookworm | 2.5.0-1+deb12u2 | fixed |
| Debian | expat | bookworm-security | 2.5.0-1+deb12u5 | fixed |
| Debian | libxmltok | bookworm | 1.2-4 | vulnerable |
| Cpe | libexpat | Not reported | 2.4.0 | fixed |
| Cpe | python | Not reported | 3.9.7 | fixed |
| Cpe | ipados | Not reported | 14.8 | fixed |
| Cpe | iphone_os | Not reported | 14.8 | fixed |
| Cpe | macos | Not reported | 11.6 | fixed |
| Cpe | tvos | Not reported | 15.0 | fixed |
| Cpe | watchos | Not reported | 8.0 | fixed |
| Suse | expat | linux micro 6.1 | 2.7.1-slfo.1.1_1.1 | fixed |
| Suse | expat | linux micro 6.0 | 2.7.1-1.1 | fixed |
| Opensuse | expat | tumbleweed | 2.4.1-1.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | expat | source | sid | 2.4.1-2 | unimportant | Not reported | [1001864] |
| Debian | expat | source | forky | 2.4.1-2 | unimportant | Not reported | [1001864] |
| Debian | expat | source | trixie | 2.4.1-2 | unimportant | Not reported | [1001864] |
| Debian | expat | source | bookworm | 2.4.1-2 | unimportant | Not reported | [1001864] |
| Debian | libxmltok | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Cpe | libexpat | cpe | Not reported | 2.4.0 | Not reported | NVD-CVE-2013-0340 | Not reported |
| Cpe | python | cpe | Not reported | 3.9.7 | Not reported | NVD-CVE-2013-0340 | Not reported |
| Cpe | ipados | cpe | Not reported | 14.8 | Not reported | NVD-CVE-2013-0340 | Not reported |
| Cpe | iphone_os | cpe | Not reported | 14.8 | Not reported | NVD-CVE-2013-0340 | Not reported |
| Cpe | macos | cpe | Not reported | 11.6 | Not reported | NVD-CVE-2013-0340 | Not reported |
| Cpe | tvos | cpe | Not reported | 15.0 | Not reported | NVD-CVE-2013-0340 | Not reported |
| Cpe | watchos | cpe | Not reported | 8.0 | Not reported | NVD-CVE-2013-0340 | Not reported |
| Suse | expat | rpm | linux micro 6.1 | 2.7.1-slfo.1.1_1.1 | Not reported | SUSE-SU-2025:20311-1 | Not reported |
| Suse | expat | rpm | linux micro 6.0 | 2.7.1-1.1 | Not reported | SUSE-SU-2025:20207-1 | Not reported |
| Opensuse | expat | rpm | tumbleweed | 2.4.1-1.2 | Not reported | OPENSUSE-SU-2024:10748-1 | Not reported |
Notes
[bookworm] libxmltok: Minor issue, no runtime dependencies left
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [expat]Unknown
Details (4)
2.5.0-1+deb12u2· amd64 · bookwormFixed · Fixed:
2.4.1-2dsa · expat · debian · bookworm
2.5.0-1+deb12u2· arm64 · bookwormFixed · Fixed:
2.4.1-2dsa · expat · debian · bookworm
2.5.0-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
2.4.1-2dsa · expat · debian · bookworm
2.5.0-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
2.4.1-2dsa · expat · debian · bookworm
- [libexpat1]Unknown
Source package: [expat]
Details (4)
2.5.0-1+deb12u2· amd64 · bookwormFixed · Fixed:
2.4.1-2dsa · expat · debian · bookworm
2.5.0-1+deb12u2· arm64 · bookwormFixed · Fixed:
2.4.1-2dsa · expat · debian · bookworm
2.5.0-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
2.4.1-2dsa · expat · debian · bookworm
2.5.0-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
2.4.1-2dsa · expat · debian · bookworm
- [libexpat1-dev]Unknown
Source package: [expat]
Details (4)
2.5.0-1+deb12u2· amd64 · bookwormFixed · Fixed:
2.4.1-2dsa · expat · debian · bookworm
2.5.0-1+deb12u2· arm64 · bookwormFixed · Fixed:
2.4.1-2dsa · expat · debian · bookworm
2.5.0-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
2.4.1-2dsa · expat · debian · bookworm
2.5.0-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
2.4.1-2dsa · expat · debian · bookworm
- [libxmltok1]Unknown
Source package: [libxmltok]
Details (2)
1.2-4· amd64 · bookwormAffected
dsa · libxmltok · debian · bookworm
1.2-4· arm64 · bookwormAffected
dsa · libxmltok · debian · bookworm
- [libxmltok1-dev]Unknown
Source package: [libxmltok]
Details (2)
1.2-4· amd64 · bookwormAffected
dsa · libxmltok · debian · bookworm
1.2-4· arm64 · bookwormAffected
dsa · libxmltok · debian · bookworm
[openSUSE Tumbleweed]
- [expat]Unknown
Source package: [expat]
Details (1)
2.8.2-1.1· x86_64 · tumbleweedFixed · Fixed:
2.4.1-1.2dsa · expat · opensuse · tumbleweed
- [libexpat1]Unknown
Source package: [expat]
Details (1)
2.8.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
2.4.1-1.2Version impact unknown
dsa · expat · opensuse · tumbleweed
- [libexpat1-32bit]Unknown
Source package: [expat]
Details (1)
2.8.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
2.4.1-1.2Version impact unknown
dsa · expat · opensuse · tumbleweed
- [libexpat-devel]Unknown
Source package: [expat]
Details (1)
2.8.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
2.4.1-1.2Version impact unknown
dsa · expat · opensuse · tumbleweed
- [libexpat-devel-32bit]Unknown
Source package: [expat]
Details (1)
2.8.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
2.4.1-1.2Version impact unknown
dsa · expat · opensuse · tumbleweed
Observed:
References
- [https://access.redhat.com/errata/RHSA-2025:22035]
- [https://cert-portal.siemens.com/productcert/csaf/ssa-398330.json]
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2013-0340]
- [https://osv.dev/vulnerability/SUSE-SU-2025:20207-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:20311-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:10748-1]
- [https://security-tracker.debian.org/tracker/CVE-2013-0340]
- [https://wid.cert-bund.de/.well-known/csaf/white/2019/wid-sec-w-2022-2399.json]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]