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DEBIAN-CVE-2025-68142

MediumCVSS 5.3 / 10
Published Dec 16, 2025·Last modified Jun 15, 2026
Affected Components(0)

No affected components available

Description

PyMdown Extensions is a set of extensions for the Python-Markdown markdown project. Versions prior to 10.16.1 have a ReDOS bug found within the figure caption extension (pymdownx.blocks.caption). In systems that take unchecked user content, this could cause long hanges when processing the data if a malicious payload was crafted. This issue is patched in Release 10.16.1. As a workaround, those who process unknown user content without timeouts or other safeguards in place to prevent really large, malicious content being aimed at systems may avoid the use of pymdownx.blocks.caption until they're able to upgrade.

Risk Scores
Base Score
5.3

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the availability of the system.

Threat Intelligence
4.9

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.36%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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