Catalogo CVE
CVE-2026-115506
expat: CVE-2026-115506
- Gravità
- High · CVSS 8.7
CVSS:4.0/AV:N/AC:L/AT:N/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
- Source
- [NVD] · [CVE record]
libexpat through 2.9.0 contains a denial of service vulnerability because billion laughs protection in accountingDiffTolerated() in xmlparse.c detects entity amplification too late. Attackers can supply a moderately sized XML document with a large DTD and nested entity expansions to consume tens of seconds of CPU per parse.
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 | vulnerable |
| Debian | expat | forky | 2.9.0-1 | vulnerable |
| Debian | expat | trixie | 2.8.3-1~deb13u1 | vulnerable |
| Debian | expat | trixie-security | 2.9.0-1~deb13u1 | vulnerable |
| Debian | expat | bookworm | 2.5.0-1+deb12u2 | vulnerable |
| Debian | expat | bookworm-security | 2.5.0-1+deb12u5 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | expat | source | sid | (unfixed) | not yet assigned | Not reported | [1151841] |
| Debian | expat | source | forky | (unfixed) | not yet assigned | Not reported | [1151841] |
| Debian | expat | source | trixie | (unfixed) | not yet assigned | Not reported | [1151841] |
| Debian | expat | source | bookworm | (unfixed) | not yet assigned | Not reported | [1151841] |
Notes
[trixie] expat: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [expat]Interessata
Dettagli (4)
2.5.0-1+deb12u2· amd64 · bookwormInteressata
dsa · expat · debian · bookworm
2.5.0-1+deb12u2· arm64 · bookwormInteressata
dsa · expat · debian · bookworm
2.5.0-1+deb12u3· amd64 · bookworm-securityInteressata
dsa · expat · debian · bookworm
2.5.0-1+deb12u3· arm64 · bookworm-securityInteressata
dsa · expat · debian · bookworm
- [libexpat1]Interessata
Pacchetto sorgente: [expat]
Dettagli (4)
2.5.0-1+deb12u2· amd64 · bookwormInteressata
dsa · expat · debian · bookworm
2.5.0-1+deb12u2· arm64 · bookwormInteressata
dsa · expat · debian · bookworm
2.5.0-1+deb12u3· amd64 · bookworm-securityInteressata
dsa · expat · debian · bookworm
2.5.0-1+deb12u3· arm64 · bookworm-securityInteressata
dsa · expat · debian · bookworm
- [libexpat1-dev]Interessata
Pacchetto sorgente: [expat]
Dettagli (4)
2.5.0-1+deb12u2· amd64 · bookwormInteressata
dsa · expat · debian · bookworm
2.5.0-1+deb12u2· arm64 · bookwormInteressata
dsa · expat · debian · bookworm
2.5.0-1+deb12u3· amd64 · bookworm-securityInteressata
dsa · expat · debian · bookworm
2.5.0-1+deb12u3· arm64 · bookworm-securityInteressata
dsa · expat · debian · bookworm
Osservato:
Riferimenti
- [https://github.com/hannob/lololol]
- [https://github.com/libexpat/libexpat]
- [https://github.com/libexpat/libexpat/issues/1160]
- [https://github.com/libexpat/libexpat/pull/1433]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-115506]
- [https://security-tracker.debian.org/tracker/CVE-2026-115506]
- [https://www.vulncheck.com/advisories/libexpat-through-2.9.0-denial-of-service-via-billion-laughs-detection-delay]
[Debian Security Tracker] · [National Vulnerability Database (NVD)]