DEBIAN-CVE-2026-88753

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Source
https://security-tracker.debian.org/tracker/CVE-2026-88753
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88753.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-88753
Upstream
  • CVE-2026-88753
Published
2026-10-15T16:18:22Z
Modified
2026-10-16T07:00:08Z
Summary
[none]
Details

A Regular-Expression Denial of Service (ReDoS) in the Markdown2. extract_metadata() function (lib/markdown2.py) of trentm markdown2 through v2.5.5 allows attackers to cause a Denial of Service (DoS) via a crafted Markdown document.

References

Affected packages

Debian:12 / python-markdown2

Package

Name
python-markdown2
Purl
pkg:deb/debian/python-markdown2?arch=source&distro=bookworm

Affected ranges

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

Affected versions

2.*
2.4.1-1
2.4.11-1
2.5.3-1~exp1
2.5.4-1
2.5.4-2
2.5.4-3
2.5.4-4

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88753.json"

Debian:13 / python-markdown2

Package

Name
python-markdown2
Purl
pkg:deb/debian/python-markdown2?arch=source&distro=trixie

Affected ranges

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

Affected versions

2.*
2.4.11-1
2.5.3-1~exp1
2.5.4-1
2.5.4-2
2.5.4-3
2.5.4-4

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88753.json"

Debian:14 / python-markdown2

Package

Name
python-markdown2
Purl
pkg:deb/debian/python-markdown2?arch=source&distro=forky

Affected ranges

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

Affected versions

2.*
2.4.11-1
2.5.3-1~exp1
2.5.4-1
2.5.4-2
2.5.4-3
2.5.4-4

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88753.json"