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4 CVEs product

Monthly

CVE-2026-86303 Sep 07, 12:15 MEDIUM PATCH This Month

Out-of-bounds read in the 92181 markdown C library's lds() function allows remote unauthenticated attackers to read memory beyond the intended buffer by supplying crafted markdown input. The flaw exists in md.c prior to commit c000d2f9cf390c315378d3717cf20911cf3e80a6, where the lds() function iterated over space characters without enforcing an end-of-buffer boundary. The CVSS 4.0 vector (6.9) reflects low confidentiality, integrity, and availability impact; no public exploit or CISA KEV listing exists at time of analysis.

Information Disclosure Markdown
NVD VulDB GitHub
CVSS 4.0
6.9
EPSS
0.3%
CVE-2025-69534 Mar 05, 15:16 PyPI HIGH PATCH This Week

Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. [CVSS 7.5 HIGH]

Denial Of Service Python Information Disclosure Markdown
NVD GitHub VulDB
CVSS 3.1
7.5
EPSS
0.1%
CVE-2023-42821 Sep 22, 17:15 Go HIGH POC PATCH This Week

The package `github.com/gomarkdown/markdown` is a Go library for parsing Markdown text and rendering as HTML. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Buffer Overflow Denial Of Service Information Disclosure Markdown
NVD GitHub
CVSS 3.1
7.5
EPSS
1.0%
CVE-2018-1000874 Dec 20, 17:29 MEDIUM POC This Month

PHP cebe markdown parser version 1.2.0 and earlier contains a Cross Site Scripting (XSS) vulnerability in all distributed parsers allowing a malicious crafted script to be executed that can result in. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

PHP XSS Markdown
NVD GitHub
CVSS 3.1
6.1
EPSS
0.8%
EPSS 0% CVSS 6.9
MEDIUM PATCH This Month

Out-of-bounds read in the 92181 markdown C library's lds() function allows remote unauthenticated attackers to read memory beyond the intended buffer by supplying crafted markdown input. The flaw exists in md.c prior to commit c000d2f9cf390c315378d3717cf20911cf3e80a6, where the lds() function iterated over space characters without enforcing an end-of-buffer boundary. The CVSS 4.0 vector (6.9) reflects low confidentiality, integrity, and availability impact; no public exploit or CISA KEV listing exists at time of analysis.

Information Disclosure Markdown
NVD VulDB GitHub
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. [CVSS 7.5 HIGH]

Denial Of Service Python Information Disclosure +1
NVD GitHub VulDB
EPSS 1% CVSS 7.5
HIGH POC PATCH This Week

The package `github.com/gomarkdown/markdown` is a Go library for parsing Markdown text and rendering as HTML. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Buffer Overflow Denial Of Service Information Disclosure +1
NVD GitHub
EPSS 1% CVSS 6.1
MEDIUM POC This Month

PHP cebe markdown parser version 1.2.0 and earlier contains a Cross Site Scripting (XSS) vulnerability in all distributed parsers allowing a malicious crafted script to be executed that can result in. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

PHP XSS Markdown
NVD GitHub

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