DEBIAN-CVE-2021-27291

See a problem?
Please try reporting it to the source first.
Source
https://security-tracker.debian.org/tracker/CVE-2021-27291
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-27291.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-27291
Upstream
Published
2021-03-17T13:15:15Z
Modified
2025-09-25T22:40:23Z
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

Debian:11

mediawiki

Package

Name
mediawiki
Purl
pkg:deb/debian/mediawiki?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:1.35.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

pygments

Package

Name
pygments
Purl
pkg:deb/debian/pygments?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.1+dfsg-2.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12

mediawiki

Package

Name
mediawiki
Purl
pkg:deb/debian/mediawiki?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:1.35.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

pygments

Package

Name
pygments
Purl
pkg:deb/debian/pygments?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.1+dfsg-2.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13

mediawiki

Package

Name
mediawiki
Purl
pkg:deb/debian/mediawiki?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:1.35.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

pygments

Package

Name
pygments
Purl
pkg:deb/debian/pygments?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.1+dfsg-2.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14

mediawiki

Package

Name
mediawiki
Purl
pkg:deb/debian/mediawiki?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:1.35.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

pygments

Package

Name
pygments
Purl
pkg:deb/debian/pygments?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.1+dfsg-2.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}