What is GHSA-vv85-hg53-g6g2?

GHSA-vv85-hg53-g6g2 is a security advisory published by GitHub Security Advisories with High severity. A Regular-Expression Denial of Service (ReDoS) in the Markdown2. extract_metadata() function (lib...

Which CVE IDs does GHSA-vv85-hg53-g6g2 cover?

GHSA-vv85-hg53-g6g2 covers the following CVE IDs: CVE-2026-88753. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-vv85-hg53-g6g2?

GHSA-vv85-hg53-g6g2 has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-vv85-hg53-g6g2HighCVSS 7.5

A Regular-Expression Denial of Service (ReDoS) in the Markdown2. extract_metadata() function (lib...

Vendor

GitHub Security Advisories

Published

October 15, 2026

Last Modified

October 20, 2026

🔗 CVE IDs covered (1)

CVE-2026-88753 →

📋 Description

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 (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-88753
https://gist.github.com/NanaSec/354b4188bbd7f4105008c7b8be49b0ba
https://github.com/advisories/GHSA-vv85-hg53-g6g2