CVE•Published 2026-07-08•Modified 2026-07-09•0 articles on news•5 live references•NVD data
CVE-2026-59928Mistune_project · Mistune
Vulnerability data via NVD (ingested)
CVSS v3.1
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS percentile
—
Weaknesses (CWE)
Description
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, a Markdown document containing many repeated or distinct reference-link definitions causes quadratic work in src/mistune/block_parser.py and the ref_links environment dictionary handling, allowing denial of service through CPU exhaustion. This issue is fixed in version 3.3.0.
Timeline
Published 2026-07-08
Modified 2026-07-09
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common). Live host counts are a Premium feature.
Shodan · vuln tag
vuln:CVE-2026-59928Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Mistune Project Mistune"All exposed Mistune Project Mistune instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Mistune"HTTP body or banner mentions "Mistune" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-59928Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-59928Censys host search filtered to this CVE id.
grep.app
CVE-2026-59928Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-59928GitHub code search for direct mentions.
Google dork
"CVE-2026-59928" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (1)
We haven't classified any articles referencing CVE-2026-59928 yet. The external references above still apply.