ALPINE-CVE-2026-25210

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Source
https://security.alpinelinux.org/vuln/CVE-2026-25210
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-25210.json
JSON Data
https://api.test.osv.dev/v1/vulns/ALPINE-CVE-2026-25210
Upstream
Published
2026-01-30T07:16:15.570Z
Modified
2026-02-04T00:15:59.946423Z
Severity
  • 6.9 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Alpine:v3.20 / expat

Package

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

Affected ranges

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

Affected versions

2.*
2.0.1-r0
2.0.1-r1
2.0.1-r2
2.0.1-r3
2.0.1-r4
2.0.1-r5
2.0.1-r6
2.1.0-r0
2.1.0-r1
2.1.0-r2
2.1.1-r0
2.2.0-r0
2.2.0-r1
2.2.1-r0
2.2.2-r0
2.2.3-r0
2.2.3-r1
2.2.4-r0
2.2.5-r0
2.2.6-r0
2.2.7-r0
2.2.7-r1
2.2.8-r0
2.2.9-r0
2.2.9-r1
2.2.10-r0
2.2.10-r1
2.3.0-r0
2.4.1-r0
2.4.2-r0
2.4.3-r0
2.4.4-r0
2.4.5-r0
2.4.6-r0
2.4.7-r0
2.4.8-r0
2.4.8-r1
2.4.9-r0
2.5.0-r0
2.5.0-r1
2.5.0-r2
2.6.0-r0
2.6.1-r0
2.6.2-r0
2.6.3-r0
2.6.4-r0
2.7.0-r0
2.7.2-r0
2.7.3-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-25210.json"

Alpine:v3.21 / expat

Package

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

Affected ranges

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

Affected versions

2.*
2.0.1-r0
2.0.1-r1
2.0.1-r2
2.0.1-r3
2.0.1-r4
2.0.1-r5
2.0.1-r6
2.1.0-r0
2.1.0-r1
2.1.0-r2
2.1.1-r0
2.2.0-r0
2.2.0-r1
2.2.1-r0
2.2.2-r0
2.2.3-r0
2.2.3-r1
2.2.4-r0
2.2.5-r0
2.2.6-r0
2.2.7-r0
2.2.7-r1
2.2.8-r0
2.2.9-r0
2.2.9-r1
2.2.10-r0
2.2.10-r1
2.3.0-r0
2.4.1-r0
2.4.2-r0
2.4.3-r0
2.4.4-r0
2.4.5-r0
2.4.6-r0
2.4.7-r0
2.4.8-r0
2.4.8-r1
2.4.9-r0
2.5.0-r0
2.5.0-r1
2.5.0-r2
2.6.0-r0
2.6.1-r0
2.6.2-r0
2.6.3-r0
2.6.4-r0
2.7.0-r0
2.7.2-r0
2.7.3-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-25210.json"

Alpine:v3.22 / expat

Package

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

Affected ranges

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

Affected versions

2.*
2.0.1-r0
2.0.1-r1
2.0.1-r2
2.0.1-r3
2.0.1-r4
2.0.1-r5
2.0.1-r6
2.1.0-r0
2.1.0-r1
2.1.0-r2
2.1.1-r0
2.2.0-r0
2.2.0-r1
2.2.1-r0
2.2.2-r0
2.2.3-r0
2.2.3-r1
2.2.4-r0
2.2.5-r0
2.2.6-r0
2.2.7-r0
2.2.7-r1
2.2.8-r0
2.2.9-r0
2.2.9-r1
2.2.10-r0
2.2.10-r1
2.3.0-r0
2.4.1-r0
2.4.2-r0
2.4.3-r0
2.4.4-r0
2.4.5-r0
2.4.6-r0
2.4.7-r0
2.4.8-r0
2.4.8-r1
2.4.9-r0
2.5.0-r0
2.5.0-r1
2.5.0-r2
2.6.0-r0
2.6.1-r0
2.6.2-r0
2.6.3-r0
2.6.4-r0
2.7.0-r0
2.7.1-r0
2.7.2-r0
2.7.3-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-25210.json"

Alpine:v3.23 / expat

Package

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

Affected ranges

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

Affected versions

2.*
2.0.1-r0
2.0.1-r1
2.0.1-r2
2.0.1-r3
2.0.1-r4
2.0.1-r5
2.0.1-r6
2.1.0-r0
2.1.0-r1
2.1.0-r2
2.1.1-r0
2.2.0-r0
2.2.0-r1
2.2.1-r0
2.2.2-r0
2.2.3-r0
2.2.3-r1
2.2.4-r0
2.2.5-r0
2.2.6-r0
2.2.7-r0
2.2.7-r1
2.2.8-r0
2.2.9-r0
2.2.9-r1
2.2.10-r0
2.2.10-r1
2.3.0-r0
2.4.1-r0
2.4.2-r0
2.4.3-r0
2.4.4-r0
2.4.5-r0
2.4.6-r0
2.4.7-r0
2.4.8-r0
2.4.8-r1
2.4.9-r0
2.5.0-r0
2.5.0-r1
2.5.0-r2
2.6.0-r0
2.6.1-r0
2.6.2-r0
2.6.3-r0
2.6.4-r0
2.7.0-r0
2.7.1-r0
2.7.2-r0
2.7.3-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-25210.json"