ALPINE-CVE-2026-76957

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Source
https://security.alpinelinux.org/vuln/CVE-2026-76957
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-76957.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-76957
Upstream
Published
2026-08-20T05:16:29Z
Modified
2026-09-09T08:30:03Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412.

References

Affected packages

Alpine:v3.21 / expat

Package

Name
expat
Purl
pkg:apk/alpine/expat?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.8.4-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-76957.json"

Alpine:v3.22 / expat

Package

Name
expat
Purl
pkg:apk/alpine/expat?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.8.4-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-76957.json"

Alpine:v3.23 / expat

Package

Name
expat
Purl
pkg:apk/alpine/expat?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.8.4-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-76957.json"

Alpine:v3.24 / expat

Package

Name
expat
Purl
pkg:apk/alpine/expat?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.8.4-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-76957.json"