Technology · PyPI
mistune (PyPI) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 20 vulnerabilities in mistune (PyPI): 0 in the last 7 days and 10 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-76098, was published on 24 August 2026.
- Last 7 days
- 0
- Last 90 days
- 10
- Critical, all time
- 0
- Exploited in the wild
- 0
About mistune (PyPI)
A fast Markdown parser for Python with support for renderers and extensions.
Latest mistune (PyPI) vulnerabilities
- CVE-2026-76098: Mistune is a Python Markdown parser with renderers and plugins. Versions 3.3.0 through 3.3.2 are vulnerable to DoS through…highCVSS 7.5EPSS 0.5%
- CVE-2026-59930: lepture Mistune predictable ID generation in TOC pluginmediumCVSS 4.3EPSS 0.2%
- CVE-2026-59929: lepture mistune XSS via incomplete URL scheme filtering in HTML renderermediumCVSS 6.1EPSS 0.3%
- CVE-2026-59928: lepture Mistune denial of service in reference-link parsinghighCVSS 7.5EPSS 0.7%
- CVE-2026-59927: lepture Mistune uncontrolled recursion in Include directivemediumCVSS 5.3EPSS 0.5%
- CVE-2026-59926: lepture Mistune XSS in Admonition directivemediumCVSS 4EPSS 0.3%
- CVE-2026-59925: Mistune denial of service via quadratic emphasis parsinghighCVSS 7.5EPSS 0.6%
- CVE-2026-59924: lepture Mistune path traversal in Include directivemediumCVSS 5.9EPSS 0.5%
- CVE-2026-59923: lepture Mistune XSS via percent-encoded bypass in safe_urlmediumCVSS 6.1EPSS 0.4%
- CVE-2026-59922: lepture Mistune denial of service in formatting pluginshighCVSS 7.5EPSS 0.6%
- CVE-2026-49851: lepture Mistune CPU exhaustion DoS in parse_link_texthighCVSS 7.5EPSS 0.6%
- CVE-2026-44899: lepture Mistune CSS injection in Image directive pluginmediumCVSS 4.7EPSS 0.3%
- CVE-2026-44898: lepture Mistune XSS in Table of Contents generationmediumCVSS 6.1EPSS 0.3%
- CVE-2026-44897: Mistune XSS via unsanitized heading ID attributemediumCVSS 6.1EPSS 0.3%
- CVE-2026-44896: lepture Mistune XSS in Figure directive image attributesmediumCVSS 6.1EPSS 0.3%
- CVE-2026-44708: Mistune math plugin XSS bypass in Markdown renderingmediumCVSS 6.1EPSS 0.3%
- CVE-2026-33079: Mistune ReDoS in LINK_TITLE_REhighCVSS 7.5EPSS 0.7%
- CVE-2022-34749: PYSEC-2022-237 - In mistune through 2.0.2, support of inline markup is implemented by using regular expressions that can…lowCVSS 3.1EPSS 1.5%
- CVE-2017-16876: PYSEC-2017-18 - Cross-site scripting (XSS) vulnerability in the _keyify function in mistune.py in Mistune before 0.8.1…lowCVSS 3.1EPSS 2.2%
- CVE-2017-15612: PYSEC-2017-80 - mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted…lowCVSS 3EPSS 0.9%
Most severe mistune (PyPI) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-33079: Mistune ReDoS in LINK_TITLE_REhighCVSS 7.5EPSS 0.7%
- CVE-2026-59928: lepture Mistune denial of service in reference-link parsinghighCVSS 7.5EPSS 0.7%
- CVE-2026-59925: Mistune denial of service via quadratic emphasis parsinghighCVSS 7.5EPSS 0.6%
- CVE-2026-59922: lepture Mistune denial of service in formatting pluginshighCVSS 7.5EPSS 0.6%
- CVE-2026-49851: lepture Mistune CPU exhaustion DoS in parse_link_texthighCVSS 7.5EPSS 0.6%
- CVE-2026-76098: Mistune is a Python Markdown parser with renderers and plugins. Versions 3.3.0 through 3.3.2 are vulnerable to DoS through…highCVSS 7.5EPSS 0.5%
- CVE-2026-59923: lepture Mistune XSS via percent-encoded bypass in safe_urlmediumCVSS 6.1EPSS 0.4%
- CVE-2026-59929: lepture mistune XSS via incomplete URL scheme filtering in HTML renderermediumCVSS 6.1EPSS 0.3%
- CVE-2026-44898: lepture Mistune XSS in Table of Contents generationmediumCVSS 6.1EPSS 0.3%
- CVE-2026-44897: Mistune XSS via unsanitized heading ID attributemediumCVSS 6.1EPSS 0.3%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 9 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 1 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/mistune.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "mistune (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/mistune, 26 September 2026.