PYSEC-2026-1604

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Import Source

https://github.com/pypa/advisory-database/blob/main/vulns/markdownify/PYSEC-2026-1604.yaml

JSON Data

https://api.osv.dev/v1/vulns/PYSEC-2026-1604

Aliases

Published

2026-07-07T16:02:51.414781Z

Modified

2026-07-07T17:46:15.322572753Z

Severity

2.9 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator

Summary

markdownify allows large headline prefixes such as <h9999999>, which causes memory consumption

Details

python-markdownify (aka markdownify) before 0.14.1 allows large headline prefixes such as <h9999999> in addition to <h1> through <h6>. This causes memory consumption.

References

Affected packages

PyPI / markdownify

Package

Name: markdownify; View open source insights on deps.dev
Purl: pkg:pypi/markdownify

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.14.1

Affected versions

0.*

0.2.0

0.3.0

0.4.0

0.4.1

0.5.1

0.5.2

0.5.3

0.6.0

0.6.1

0.6.3

0.6.4

0.6.5

0.6.6

0.7.0

0.7.1

0.7.2

0.7.3

0.7.4

0.8.0

0.8.1

0.9.0

0.9.2

0.9.3

0.9.4

0.10.0

0.10.1

0.10.2

0.10.3

0.11.0

0.11.1

0.11.2

0.11.4

0.11.5

0.11.6

0.12.1

0.13.0

0.13.1

0.14.0

Database specific

source

"https://github.com/pypa/advisory-database/blob/main/vulns/markdownify/PYSEC-2026-1604.yaml"