Catalogo CVE
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
- Gravità
- 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
[Debian 12 (Bookworm)]
- [expat]Interessata
Dettagli (4)
2.5.0-1+deb12u2· amd64 · bookwormInteressata · Corretta:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u2· arm64 · bookwormInteressata · Corretta:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
- [libexpat1]Interessata
Pacchetto sorgente: [expat]
Dettagli (4)
2.5.0-1+deb12u2· amd64 · bookwormInteressata · Corretta:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u2· arm64 · bookwormInteressata · Corretta:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
- [libexpat1-dev]Interessata
Pacchetto sorgente: [expat]
Dettagli (4)
2.5.0-1+deb12u2· amd64 · bookwormInteressata · Corretta:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u2· arm64 · bookwormInteressata · Corretta:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
2.5.0-1+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
2.5.0-1+deb12u5nvd · expat · debian · bookworm; nvd · expat · debian · 12
[Debian 13 (Trixie)]
- [expat]Interessata
Dettagli (6)
2.7.1-2· amd64 · trixieInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.7.1-2· arm64 · trixieInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.2-1~deb13u1· amd64 · trixie-security · Historical versionInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.3-1~deb13u1· amd64 · trixie-security · Historical versionInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.3-1~deb13u1· arm64 · trixie-securityInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.9.0-1~deb13u1· amd64 · trixie-securityCorretta · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
- [libexpat1]Interessata
Pacchetto sorgente: [expat]
Dettagli (6)
2.7.1-2· amd64 · trixieInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.7.1-2· arm64 · trixieInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.2-1~deb13u1· amd64 · trixie-security · Historical versionInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.3-1~deb13u1· amd64 · trixie-security · Historical versionInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.3-1~deb13u1· arm64 · trixie-securityInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.9.0-1~deb13u1· amd64 · trixie-securityCorretta · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
- [libexpat1-dev]Interessata
Pacchetto sorgente: [expat]
Dettagli (6)
2.7.1-2· amd64 · trixieInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.7.1-2· arm64 · trixieInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.2-1~deb13u1· amd64 · trixie-security · Historical versionInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.3-1~deb13u1· amd64 · trixie-security · Historical versionInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.8.3-1~deb13u1· arm64 · trixie-securityInteressata · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
2.9.0-1~deb13u1· amd64 · trixie-securityCorretta · Corretta:
2.9.0-1~deb13u1nvd · expat · debian · 13
[openSUSE Tumbleweed]
- [expat]Interessata
Pacchetto sorgente: [expat]
Dettagli (1)
2.8.2-1.1· x86_64 · tumbleweedInteressata · Corretta:
2.8.5-1.1nvd · expat · opensuse · tumbleweed
- [libexpat1]Sconosciuto
Pacchetto sorgente: [expat]
Dettagli (1)
2.8.2-1.1· x86_64 · tumbleweedSconosciuto · Corretta:
2.8.5-1.1Version impact unknown
nvd · expat · opensuse · tumbleweed
- [libexpat1-32bit]Sconosciuto
Pacchetto sorgente: [expat]
Dettagli (1)
2.8.2-1.1· x86_64 · tumbleweedSconosciuto · Corretta:
2.8.5-1.1Version impact unknown
nvd · expat · opensuse · tumbleweed
- [libexpat-devel]Sconosciuto
Pacchetto sorgente: [expat]
Dettagli (1)
2.8.2-1.1· x86_64 · tumbleweedSconosciuto · Corretta:
2.8.5-1.1Version impact unknown
nvd · expat · opensuse · tumbleweed
- [libexpat-devel-32bit]Sconosciuto
Pacchetto sorgente: [expat]
Dettagli (1)
2.8.2-1.1· x86_64 · tumbleweedSconosciuto · Corretta:
2.8.5-1.1Version impact unknown
nvd · expat · opensuse · tumbleweed
Osservato:
Riferimenti
- [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]