Updated: 2025-12-03 14:28:07.80272
Description:
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.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | MEDIUM | 6.8 |
| CVSS Version 3.x | 0.0 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| CentOS 8.4 ELS | expat | 2.2.5 | 0.0 | Released | CLSA-2026:1767799061 | 2026-01-07 20:23:54 | ||
| CentOS 8.5 ELS | expat | 2.2.5 | 0.0 | Released | CLSA-2026:1767799681 | 2026-01-07 20:23:53 | CVE-2013-0340 is only exploitable when a network‑reachable application parses attacker‑supplied ... | |
| CentOS Stream 8 ELS | expat | 2.2.5 | 0.0 | Released | CLSA-2026:1767798754 | 2026-01-07 20:23:55 |