CVE-2026-44897

A flaw was found in Mistune, a Python Markdown parser. A remote attacker could exploit this vulnerability by providing specially crafted input to the HTMLRenderer.heading function. This input, containing a double-quote character in the HTML heading's ID attribute, is not properly sanitized,...

SUSE SLES16 Security Update : python-mistune (SUSE-SU-2026:21858-1)

The remote SUSE Linux SLES16 / SLESSAP16 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:21858-1 advisory. This update for python-mistune fixes the following issues - CVE-2026-33079: ReDoS in LINKTITLERE can lead to denial of service via...

openSUSE 16 Security Update : python-mistune (openSUSE-SU-2026:20827-1)

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20827-1 advisory. This update for python-mistune fixes the following issues - CVE-2026-33079: ReDoS in LINKTITLERE can lead to denial of service via a crafted...

Security update for python-mistune (important)

openSUSE security update: security update for python-mistune ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:20827-1 Rating: important References: bsc1264347 bsc1264750 bsc1264751 bsc1264752 bsc1264754 bsc1265052 bsc1265053 Cross-References:...

OPENSUSE-SU-2026:20827-1 Security update for python-mistune

This update for python-mistune fixes the following issues - CVE-2026-33079: ReDoS in LINKTITLERE can lead to denial of service via a crafted Markdown bsc1264347. - CVE-2026-33441: processing of malformed reference links can lead to excessive resource consumption and denial of service bsc1264752. ...

Mistune Image Directive CSS Injection Vulnerability

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Mistune: XSS via unescaped figclass/figwidth in Figure directive

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Linux Distros Unpatched Vulnerability : CVE-2026-44898

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, rendertocul builds a table-of-contents tree from a list of level, id, text tuple...

Linux Distros Unpatched Vulnerability : CVE-2026-44899

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, the Image directive plugin validates the :width: and :height: options with a reg...

Linux Distros Unpatched Vulnerability : CVE-2026-44897

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, HTMLRenderer.heading builds the opening tag by string-concatenating the id...

Linux Distros Unpatched Vulnerability : CVE-2026-44708

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, the mistune math plugin renders inline math $...$ and block math $$...$$ by...

Linux Distros Unpatched Vulnerability : CVE-2026-44896

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Mistune is a Python Markdown parser with renderers and plugins. In 3.2.0 and earlier, in src/mistune/directives/image.py, the renderfigure function concatenates...

guide-md (>=0.0.6, <=0.1.20), zh-doclint (>=0.1.0, <=0.1.2) +1 more potentially affected by CVE-2026-44899 via mistune (0.7.3)

mistune PYPI version 0.7.3 is affected by a known vulnerability. The following packages have a transitive dependency on mistune and may be impacted: - guide-md =0.0.6, =0.1.0, =0.1.2, =0.3.2 Source cves: CVE-2026-44899 Source advisory: OSV:PYSEC-2026-2209...

CVE-2026-44898

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, rendertocul builds a table-of-contents tree from a list of level, id, text tuples. Both the id value used as href="" and the text value used as the visible link label are inserted into tags via a plain Python format...

CVE-2026-44899

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, the Image directive plugin validates the :width: and :height: options with a regex compiled as numre = re.compiler"^\d+?:.\d?". When the validated value is not a plain integer, renderblockimage inserts it directly int...

CVE-2026-44896

Mistune is a Python Markdown parser with renderers and plugins. In 3.2.0 and earlier, in src/mistune/directives/image.py, the renderfigure function concatenates figclass and figwidth options directly into HTML attributes without escaping. This allows attribute injection and XSS even when...

CVE-2026-44897

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, HTMLRenderer.heading builds the opening tag by string-concatenating the id attribute value directly into the HTML — with no call to escape, safeentity, or any other sanitisation function. A double-quote character " in...

cateye (>=0.3.4, <=0.3.8), docwriter (>=0.1.0, <=1.0.2) +6 more potentially affected by CVE-2026-44898 via mistune (0.8.3)

mistune PYPI version 0.8.3 is affected by a known vulnerability. The following packages have a transitive dependency on mistune and may be impacted: - cateye =0.3.4, =0.1.0, =1.1.2, =0.1.0.dev0, =0.0.10, =0.0.1, =0.6.0, =0.15.0 Source cves: CVE-2026-44898 Source advisory: OSV:PYSEC-2026-2208...

PYSEC-2026-168

Mistune is a Python Markdown parser with renderers and plugins. In 3.2.0 and realier, in src/mistune/directives/image.py, the renderfigure function concatenates figclass and figwidth options directly into HTML attributes without escaping. This allows attribute injection and XSS even when...

alphapulldown (>=0.21.2, <=0.30.7), arisu (>=0.1.1, <=0.1.2) +51 more potentially affected by CVE-2026-44897 via mistune (2.1.0)

mistune PYPI version 2.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on mistune and may be impacted: - alphapulldown =0.21.2, =0.1.1, =0.0.1, =0.1.0, =0.0.1, =0.1.1, =4.2.93, =2.0.4, =5.2.0a0, =0.0.1, =3.7.1, =0.8.0, =0.8.5 and more Source cves:...