42 matches found
CVE-2026-115347
A flaw was found in mistune. A remote attacker can exploit an inefficient algorithmic complexity issue in the link text parsing logic by submitting specially crafted Markdown input containing long sequences of unmatched square brackets. Processing this input causes repeated forward scans, leading...
CVE-2026-115349
A flaw was found in mistune. This flaw allows a remote attacker to cause a Denial of Service DoS by submitting crafted Markdown input containing deeply nested square brackets. Processing this input triggers inefficient parsing behavior in the link text parser, exhausting server processor resource...
MGASA-2026-0254 Updated python-mistune package fixes security vulnerabilities
The updated python-mistune package fixes two security vulnerablities: 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...
Mistune: Potential DoS via quadratic-time parsing in parse_link_text
SummaryMistune is vulnerable to a CPU exhaustion DoS due to superlinear approximately On² behavior in parselinktext. A relatively small input consisting of repeated characters causes significant parsing slowdown. Affected componentmistune/inlineparser.py → parselinktext DescriptionWhen parsing...
PT-2026-59302
Summary Mistune is vulnerable to a CPU exhaustion DoS due to superlinear approximately On² behavior in parse link text. A relatively small input consisting of repeated characters causes significant parsing slowdown. Affected component mistune/inline parser.py → parse link text Description When...
GHSA-QCQ2-496W-V96P Mistune: Potential DoS via quadratic-time parsing in parse_link_text
Summary Mistune is vulnerable to a CPU exhaustion DoS due to superlinear approximately On² behavior in parselinktext. A relatively small input consisting of repeated characters causes significant parsing slowdown. Affected component mistune/inlineparser.py → parselinktext Description When parsing...
Mistune: Potential DoS via quadratic-time parsing in parse_link_text
Summary Mistune is vulnerable to a CPU exhaustion DoS due to superlinear approximately On² behavior in parselinktext. A relatively small input consisting of repeated characters causes significant parsing slowdown. Affected component mistune/inlineparser.py → parselinktext Description When parsing...
EUVD-2026-39007
Mistune: Potential DoS via quadratic-time parsing in parselinktext...
openSUSE 16 Security Update : python-mistune (openSUSE-SU-2026:21191-1)
The remote openSUSE 16 host has a package installed that is affected by a vulnerability as referenced in the openSUSE- SU-2026:21191-1 advisory. This update for python-mistune fixes the following issue - CVE-2026-49851: potential DoS via quadratic-time parsing in parselinktext bsc1269091. Tenable...
SUSE-SU-2026:22495-1 Security update for python-mistune
This update for python-mistune fixes the following issue - CVE-2026-49851: potential DoS via quadratic-time parsing in parselinktext bsc1269091...
OPENSUSE-SU-2026:21191-1 Security update for python-mistune
This update for python-mistune fixes the following issue - CVE-2026-49851: potential DoS via quadratic-time parsing in parselinktext bsc1269091...
Mistune: Potential DoS via quadratic-time parsing in parse_link_text
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Linux Distros Unpatched Vulnerability : CVE-2026-49851
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 3.3.0, Mistune is vulnerable to a CPU exhaustion DoS due to superlinear approximately O...
Allocation of Resources Without Limits or Throttling
Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the parselinktext function of mistune/inlineparser.py, which performs a regex search inside a loop that advances one character at a time when parsing fails, producing On² behavior...
CVE-2026-49851
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Mistune is vulnerable to a CPU exhaustion DoS due to superlinear approximately On² behavior in parselinktext. When parsing Markdown containing many consecutive characters, parselinktext repeatedly scans the input usin...
CVE-2026-49851
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Mistune is vulnerable to a CPU exhaustion DoS due to superlinear approximately On² behavior in parselinktext. When parsing Markdown containing many consecutive characters, parselinktext repeatedly scans the input usin...
CVE-2026-49851
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Mistune is vulnerable to a CPU exhaustion DoS due to superlinear approximately On² behavior in parselinktext. When parsing Markdown containing many consecutive characters, parselinktext repeatedly scans the input usin...
CVE-2026-49851
Mistune (Python Markdown parser) prior to 3.3.0 is vulnerable to CPU exhaustion DoS due to quadratic-time behavior in parse_link_text when parsing many consecutive '[' characters. The code repeatedly scans input with a regex inside a loop, yielding O(n^2) runtime on affected inputs and enabling a...
CVE-2026-49851 Mistune: Potential DoS via quadratic-time parsing in parse_link_text
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Mistune is vulnerable to a CPU exhaustion DoS due to superlinear approximately On² behavior in parselinktext. When parsing Markdown containing many consecutive characters, parselinktext repeatedly scans the input usin...
CVE-2026-49851 Mistune: Potential DoS via quadratic-time parsing in parse_link_text
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Mistune is vulnerable to a CPU exhaustion DoS due to superlinear approximately On² behavior in parselinktext. When parsing Markdown containing many consecutive characters, parselinktext repeatedly scans the input usin...