CVE-Katalog
CVE-2026-102633
libexpat versions 2.7.2 through 2.8.5 contain an integer overflow vulnerability in expat_realloc() function on 32-bit platforms when computing allocation sizes. Attackers supplying malicious XML to ap
- Schweregrad
- High · CVSS 8.2
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.35% · Oct 22, 2026
libexpat versions 2.7.2 through 2.8.5 contain an integer overflow vulnerability in expat_realloc() function on 32-bit platforms when computing allocation sizes. Attackers supplying malicious XML to applications parsing with vulnerable libexpat can cause heap buffer overflow, memory corruption, or denial of service.
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 | vulnerable |
| Debian | expat | trixie-security | 2.9.0-1~deb13u1 | fixed |
| Debian | expat | bookworm | 2.5.0-1+deb12u2 | vulnerable |
| Debian | expat | bookworm-security | 2.5.0-1+deb12u5 | fixed |
| Opensuse | expat | tumbleweed | 2.8.5-1.1 | fixed |
| Alpine | expat | 3.21 | 2.9.0-r0 | fixed |
| Alpine | expat | 3.22 | 2.9.0-r0 | fixed |
| Alpine | expat | 3.23 | 2.9.0-r0 | fixed |
| Alpine | expat | 3.24 | 2.9.0-r0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | expat | source | sid | 2.8.5-2 | not yet assigned | Not reported | [1149507] |
| Debian | expat | source | forky | 2.8.5-2 | not yet assigned | Not reported | [1149507] |
| Debian | expat | source | trixie | 2.9.0-1~deb13u1 | not yet assigned | Not reported | [1149507] |
| Debian | expat | source | bookworm | 2.5.0-1+deb12u5 | not yet assigned | Not reported | [1149507] |
| Opensuse | expat | rpm | tumbleweed | 2.8.5-1.1 | Not reported | OPENSUSE-SU-2026:11981-1 | Not reported |
| Alpine | expat | apk | 3.21 | 2.9.0-r0 | Not reported | ALPINE-CVE-2026-102633 | Not reported |
| Alpine | expat | apk | 3.22 | 2.9.0-r0 | Not reported | ALPINE-CVE-2026-102633 | Not reported |
| Alpine | expat | apk | 3.23 | 2.9.0-r0 | Not reported | ALPINE-CVE-2026-102633 | Not reported |
| Alpine | expat | apk | 3.24 | 2.9.0-r0 | Not reported | ALPINE-CVE-2026-102633 | Not reported |
OpenFactory catalog packages
Die Paketzuordnung läuft.
[Debian 12 (Bookworm)]
- [expat]Unbekannt
Details (4)
2.5.0-1+deb12u2· amd64 · bookwormBetroffen · Behoben:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u2· arm64 · bookwormBetroffen · Behoben:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u3· amd64 · bookworm-securityBetroffen · Behoben:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u3· arm64 · bookworm-securityBetroffen · Behoben:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
- [libexpat1]Unbekannt
Quellpaket: [expat]
Details (4)
2.5.0-1+deb12u2· amd64 · bookwormBetroffen · Behoben:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u2· arm64 · bookwormBetroffen · Behoben:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u3· amd64 · bookworm-securityBetroffen · Behoben:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u3· arm64 · bookworm-securityBetroffen · Behoben:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
- [libexpat1-dev]Unbekannt
Quellpaket: [expat]
Details (4)
2.5.0-1+deb12u2· amd64 · bookwormBetroffen · Behoben:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u2· arm64 · bookwormBetroffen · Behoben:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u3· amd64 · bookworm-securityBetroffen · Behoben:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u3· arm64 · bookworm-securityBetroffen · Behoben:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
[Debian 13 (Trixie)]
- [expat]Unbekannt
Details (6)
2.7.1-2· amd64 · trixieBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.7.1-2· arm64 · trixieBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.2-1~deb13u1· amd64 · trixie-security · Historical versionBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.3-1~deb13u1· amd64 · trixie-security · Historical versionBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.3-1~deb13u1· arm64 · trixie-securityBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.9.0-1~deb13u1· amd64 · trixie-securityBehoben · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
- [libexpat1]Unbekannt
Quellpaket: [expat]
Details (6)
2.7.1-2· amd64 · trixieBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.7.1-2· arm64 · trixieBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.2-1~deb13u1· amd64 · trixie-security · Historical versionBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.3-1~deb13u1· amd64 · trixie-security · Historical versionBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.3-1~deb13u1· arm64 · trixie-securityBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.9.0-1~deb13u1· amd64 · trixie-securityBehoben · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
- [libexpat1-dev]Unbekannt
Quellpaket: [expat]
Details (6)
2.7.1-2· amd64 · trixieBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.7.1-2· arm64 · trixieBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.2-1~deb13u1· amd64 · trixie-security · Historical versionBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.3-1~deb13u1· amd64 · trixie-security · Historical versionBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.3-1~deb13u1· arm64 · trixie-securityBetroffen · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.9.0-1~deb13u1· amd64 · trixie-securityBehoben · Behoben:
2.9.0-1~deb13u1nvd · expat · debian · 13
[openSUSE Tumbleweed]
- [expat]Unbekannt
Quellpaket: [expat]
Details (1)
2.8.2-1.1· x86_64 · tumbleweedBetroffen · Behoben:
2.8.5-1.1nvd · expat · opensuse · tumbleweed
- [libexpat1]Unbekannt
Quellpaket: [expat]
Details (1)
2.8.2-1.1· x86_64 · tumbleweedUnbekannt · Behoben:
2.8.5-1.1Version impact unknown
nvd · expat · opensuse · tumbleweed
- [libexpat1-32bit]Unbekannt
Quellpaket: [expat]
Details (1)
2.8.2-1.1· x86_64 · tumbleweedUnbekannt · Behoben:
2.8.5-1.1Version impact unknown
nvd · expat · opensuse · tumbleweed
- [libexpat-devel]Unbekannt
Quellpaket: [expat]
Details (1)
2.8.2-1.1· x86_64 · tumbleweedUnbekannt · Behoben:
2.8.5-1.1Version impact unknown
nvd · expat · opensuse · tumbleweed
- [libexpat-devel-32bit]Unbekannt
Quellpaket: [expat]
Details (1)
2.8.2-1.1· x86_64 · tumbleweedUnbekannt · Behoben:
2.8.5-1.1Version impact unknown
nvd · expat · opensuse · tumbleweed
Beobachtet:
Referenzen
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_4619-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-102633]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-102633]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-102633]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:11981-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-102633]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3637.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]