ALPINE-CVE-2021-27291

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Source
https://security.alpinelinux.org/vuln/CVE-2021-27291
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-27291.json
JSON Data
https://api.test.osv.dev/v1/vulns/ALPINE-CVE-2021-27291
Upstream
Published
2021-03-17T13:15:15Z
Modified
2025-09-26T00:17:57.567361Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions. Some of the regular expressions have exponential or cubic worst-case complexity and are vulnerable to ReDoS. By crafting malicious input, an attacker can cause a denial of service.

References

Affected packages

Alpine:v3.11 / py3-pygments

Package

Name
py3-pygments
Purl
pkg:apk/alpine/py3-pygments?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.5.2-r1

Affected versions

1.*

1.3.1-r0
1.3.1-r1
1.4-r0
1.4-r1
1.4-r2
1.5-r0
1.6-r0

2.*

2.0.2-r0
2.0.2-r1
2.0.2-r2
2.0.2-r3
2.1.3-r0
2.1.3-r1
2.1.3-r2
2.1.3-r3
2.2.0-r0
2.2.0-r1
2.4.0-r0
2.4.2-r0
2.4.2-r1
2.4.2-r2
2.5.1-r0
2.5.2-r0

Alpine:v3.12 / py3-pygments

Package

Name
py3-pygments
Purl
pkg:apk/alpine/py3-pygments?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.6.1-r1

Affected versions

1.*

1.3.1-r0
1.3.1-r1
1.4-r0
1.4-r1
1.4-r2
1.5-r0
1.6-r0

2.*

2.0.2-r0
2.0.2-r1
2.0.2-r2
2.0.2-r3
2.1.3-r0
2.1.3-r1
2.1.3-r2
2.1.3-r3
2.2.0-r0
2.2.0-r1
2.4.0-r0
2.4.2-r0
2.4.2-r1
2.4.2-r2
2.5.1-r0
2.5.2-r0
2.5.2-r1
2.6.1-r0