ALPINE-CVE-2026-76641
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-76641
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-76641.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-76641
- Upstream
- Published
- 2026-08-20T18:16:51.887Z
- Modified
- 2026-09-01T09:30:02.995228520Z
- Severity
-
- 8.7 (High) CVSS_V4 - 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 CVSS Calculator
- Summary
- [none]
- Details
-
Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption by processing XML with external entity parsers created via XMLExternalEntityParserCreate. A struct size mismatch between ELEMENTTYPE members causes storeAtts to read the attIndex member past allocated memory boundaries, resulting in failure to normalize whitespace in non-CDATA attributes or a wild pointer dereference causing a segfault. This vulnerability was introduced by the fix for CVE-2026-66046.
- References
Affected packages
Alpine:v3.21 / expat
Package
- Name
- expat
- Purl
- pkg:apk/alpine/expat?arch=source
Alpine:v3.22 / expat
Package
- Name
- expat
- Purl
- pkg:apk/alpine/expat?arch=source
Alpine:v3.23 / expat
Package
- Name
- expat
- Purl
- pkg:apk/alpine/expat?arch=source