Catalogo CVE
CVE-2026-25210
Expat vulnerabilities
- Gravità
- High · CVSS 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.21% · Oct 22, 2026
In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.
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 | vulnerable |
| Debian | expat | bookworm-security | 2.5.0-1+deb12u5 | fixed |
| Ubuntu | expat | noble | Not reported | vulnerable |
| Ubuntu | expat | noble | 2.6.1-2ubuntu0.4 | fixed |
| Ubuntu | libexpat1 | noble | 2.6.1-2ubuntu0.4 | fixed |
| Ubuntu | libexpat1-dev | noble | 2.6.1-2ubuntu0.4 | fixed |
| Ubuntu | libxmltok | noble | 1.2-4.1ubuntu2.24.0.4.1+esm4 | fixed |
| Ubuntu | libxmltok1-dev | noble | 1.2-4.1ubuntu2.24.0.4.1+esm4 | fixed |
| Ubuntu | libxmltok1t64 | noble | 1.2-4.1ubuntu2.24.0.4.1+esm4 | fixed |
| Alpine | expat | 3.20 | 2.7.4-r0 | fixed |
| Alpine | expat | 3.21 | 2.7.4-r0 | fixed |
| Alpine | expat | 3.22 | 2.7.4-r0 | fixed |
| Alpine | expat | 3.23 | 2.7.4-r0 | fixed |
| Alpine | expat | 3.24 | 2.7.4-r0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | expat | source | sid | 2.7.4-1 | not yet assigned | Not reported | [1126697] |
| Debian | expat | source | forky | 2.7.4-1 | not yet assigned | Not reported | [1126697] |
| Debian | expat | source | trixie | 2.8.2-1~deb13u1 | not yet assigned | Not reported | [1126697] |
| Debian | expat | source | bookworm | 2.5.0-1+deb12u4 | not yet assigned | Not reported | [1126697] |
| Ubuntu | expat | deb | noble | 2.6.1-2ubuntu0.4 | Not reported | Not reported | Not reported |
| Ubuntu | libexpat1 | deb | noble | 2.6.1-2ubuntu0.4 | Not reported | Not reported | Not reported |
| Ubuntu | libexpat1-dev | deb | noble | 2.6.1-2ubuntu0.4 | Not reported | Not reported | Not reported |
| Ubuntu | libxmltok | deb | noble | 1.2-4.1ubuntu2.24.0.4.1+esm4 | Not reported | Not reported | Not reported |
| Ubuntu | libxmltok1-dev | deb | noble | 1.2-4.1ubuntu2.24.0.4.1+esm4 | Not reported | Not reported | Not reported |
| Ubuntu | libxmltok1t64 | deb | noble | 1.2-4.1ubuntu2.24.0.4.1+esm4 | Not reported | Not reported | Not reported |
| Alpine | expat | apk | 3.20 | 2.7.4-r0 | Not reported | ALPINE-CVE-2026-25210 | Not reported |
| Alpine | expat | apk | 3.21 | 2.7.4-r0 | Not reported | ALPINE-CVE-2026-25210 | Not reported |
| Alpine | expat | apk | 3.22 | 2.7.4-r0 | Not reported | ALPINE-CVE-2026-25210 | Not reported |
| Alpine | expat | apk | 3.23 | 2.7.4-r0 | Not reported | ALPINE-CVE-2026-25210 | Not reported |
| Alpine | expat | apk | 3.24 | 2.7.4-r0 | Not reported | ALPINE-CVE-2026-25210 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [expat]Interessata
Dettagli (4)
2.5.0-1+deb12u2· amd64 · bookwormInteressata · Corretta:
2.5.0-1+deb12u4usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u2· arm64 · bookwormInteressata · Corretta:
2.5.0-1+deb12u4usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
2.5.0-1+deb12u4usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
2.5.0-1+deb12u4usn · expat · debian · bookworm; usn · expat · debian · 12
- [libexpat1]Interessata
Pacchetto sorgente: [expat]
Dettagli (4)
2.5.0-1+deb12u2· amd64 · bookwormInteressata · Corretta:
2.5.0-1+deb12u4usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u2· arm64 · bookwormInteressata · Corretta:
2.5.0-1+deb12u4usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
2.5.0-1+deb12u4usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
2.5.0-1+deb12u4usn · expat · debian · bookworm; usn · expat · debian · 12
- [libexpat1-dev]Interessata
Pacchetto sorgente: [expat]
Dettagli (4)
2.5.0-1+deb12u2· amd64 · bookwormInteressata · Corretta:
2.5.0-1+deb12u4usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u2· arm64 · bookwormInteressata · Corretta:
2.5.0-1+deb12u4usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
2.5.0-1+deb12u4usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
2.5.0-1+deb12u4usn · expat · debian · bookworm; usn · expat · debian · 12
[Debian 13 (Trixie)]
- [expat]Interessata
Dettagli (6)
2.7.1-2· amd64 · trixieInteressata · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.7.1-2· arm64 · trixieInteressata · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.8.2-1~deb13u1· amd64 · trixie-security · Historical versionCorretta · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.8.3-1~deb13u1· amd64 · trixie-security · Historical versionCorretta · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.8.3-1~deb13u1· arm64 · trixie-securityCorretta · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.9.0-1~deb13u1· amd64 · trixie-securityCorretta · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
- [libexpat1]Interessata
Pacchetto sorgente: [expat]
Dettagli (6)
2.7.1-2· amd64 · trixieInteressata · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.7.1-2· arm64 · trixieInteressata · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.8.2-1~deb13u1· amd64 · trixie-security · Historical versionCorretta · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.8.3-1~deb13u1· amd64 · trixie-security · Historical versionCorretta · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.8.3-1~deb13u1· arm64 · trixie-securityCorretta · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.9.0-1~deb13u1· amd64 · trixie-securityCorretta · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
- [libexpat1-dev]Interessata
Pacchetto sorgente: [expat]
Dettagli (6)
2.7.1-2· amd64 · trixieInteressata · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.7.1-2· arm64 · trixieInteressata · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.8.2-1~deb13u1· amd64 · trixie-security · Historical versionCorretta · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.8.3-1~deb13u1· amd64 · trixie-security · Historical versionCorretta · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.8.3-1~deb13u1· arm64 · trixie-securityCorretta · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
2.9.0-1~deb13u1· amd64 · trixie-securityCorretta · Corretta:
2.8.2-1~deb13u1usn · expat · debian · 13
Osservato:
Riferimenti
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_4619-1.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-25210]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-25210]
- [https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-155-04.json]
- [https://security-tracker.debian.org/tracker/CVE-2026-25210]
- [https://ubuntu.com/security/notices/USN-8022-2]
- [https://ubuntu.com/security/notices/USN-8023-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1194.json]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]