DEBIAN-CVE-2026-59925

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Source
https://security-tracker.debian.org/tracker/CVE-2026-59925
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59925.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-59925
Upstream
Published
2026-07-08T17:17:28.183Z
Modified
2026-07-09T09:00:23.092661503Z
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

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, long sequences of well-formed double-asterisk or triple-asterisk emphasis pairs around a character cause quadratic work in src/mistune/inline_parser.py because the parser scans forward for matching close markers from every potential opening run, allowing denial of service in default Mistune parsing. This issue is fixed in version 3.3.0.

References

Affected packages

Debian:11 / mistune

Package

Name
mistune
Purl
pkg:deb/debian/mistune?arch=source&distro=bullseye

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.8.4-4
0.8.4-5
2.*
2.0.0~rc1-1~exp1
2.0.0-1
2.0.0-1+really0.8.4-1
2.0.0.0+really2.0.0-1~exp1
2.0.0.0+really2.0.0-1
2.0.2-1
2.0.3-1
2.0.4-1
2.0.4-2
3.*
3.0.2-1
3.0.2-2
3.1.3-1
3.1.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59925.json"

Debian:12 / mistune

Package

Name
mistune
Purl
pkg:deb/debian/mistune?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.0.4-1
2.0.4-2
3.*
3.0.2-1
3.0.2-2
3.1.3-1
3.1.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59925.json"

Debian:13 / mistune

Package

Name
mistune
Purl
pkg:deb/debian/mistune?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.1.3-1
3.1.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59925.json"

Debian:14 / mistune

Package

Name
mistune
Purl
pkg:deb/debian/mistune?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.1.3-1
3.1.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59925.json"