md4c:fuzz-mdhtml: Heap-buffer-overflow in md_is_link_title

Project: https://github.com/mity/md4c.git Detailed Report: https://oss-fuzz.com/testcase?key=5671318203990016 Project: md4c Fuzzing Engine: afl Fuzz Target: fuzz-mdhtml Job Type: aflasanmd4c Platform Id: linux Crash Type: Heap-buffer-overflow READ 1 Crash Address: 0x7b6a4b1e0758 Crash State:...

Mattermost 访问控制错误漏洞

Mattermost is an open-source collaboration platform developed by the American company Mattermost. Versions of Mattermost such as 11.5.1 and earlier 11.5.x series, as well as 11.4.3 and earlier 11.4.x series, have a access control vulnerability. This vulnerability stems from the failure to validat...

PT-2026-44438

Impact A stored cross-site scripting XSS vulnerability affected entry summary rendering in Sveltia CMS. Entry summaries that allowed limited Markdown were parsed, sanitized, and then HTML entities were decoded. This order allowed specially crafted entity-encoded HTML, such as encoded tags or even...

PT-2026-41657

Name of the Vulnerable Software and Affected Versions Mattermost versions 11.4.x through 11.4.3 Mattermost versions 11.5.x through 11.5.1 Description An issue exists where the burn-on-read reveal endpoint fails to validate the 'X-Requested-With' header. This allows an authenticated channel member...

CVE-2026-6339: Origin Validation Error

Mattermost versions 11.5.x = 11.5.1, 11.4.x = 11.4.3 fail to validate the X-Requested-With header on the burn-on-read reveal endpoint which allows an authenticated channel member to force the reveal of a burn-on-read message without recipient consent via a crafted Markdown image tag.. Mattermost...

[SECURITY] Fedora 44 Update: python-jupytext-1.19.1-4.fc44

Have you always wished Jupyter notebooks were plain text documents? Wished you could edit them in your favorite IDE? And get clear and meaningful diffs when doing version control? Then... Jupytext may well be the tool you're looking for! Jupytext is a plugin for Jupyter that can save Jupyter...

[SECURITY] Fedora 42 Update: python-jupytext-1.19.1-4.fc42

Have you always wished Jupyter notebooks were plain text documents? Wished you could edit them in your favorite IDE? And get clear and meaningful diffs when doing version control? Then... Jupytext may well be the tool you're looking for! Jupytext is a plugin for Jupyter that can save Jupyter...

[SECURITY] Fedora 43 Update: python-jupytext-1.19.1-4.fc43

Have you always wished Jupyter notebooks were plain text documents? Wished you could edit them in your favorite IDE? And get clear and meaningful diffs when doing version control? Then... Jupytext may well be the tool you're looking for! Jupytext is a plugin for Jupyter that can save Jupyter...

Out-of-bounds Read

github.com/gomarkdown/markdown is vulnerable to an Out-of-Bounds Read. The vulnerability is due to improper handling of malformed Markdown input containing a character when processed by the SmartypantsRenderer, which allows an attacker to trigger an out-of-bounds read or cause the application to...

GHSA-J76W-P754-G2W7 Mattermost doesn't validate the response body of proxied images

Mattermost versions 11.5.x = 11.5.1, 10.11.x = 10.11.13, 11.4.x = 11.4.3 fail to validate the response body of proxied images, which allows a remote attacker to enact client-side DoS via an SVG file served from an attacker-controlled origin under a non-SVG Content-Type header e.g. image/png...

Improper Check for Unusual or Exceptional Conditions

Overview Affected versions of this package are vulnerable to Improper Check for Unusual or Exceptional Conditions via the image proxy process. An attacker can cause a denial of service on client systems by serving malicious SVG files from an attacker-controlled origin with a misleading Content-Ty...

CVE-2021-47963

Anote 1.0 contains a persistent cross-site scripting vulnerability that allows attackers to execute arbitrary code by injecting malicious payloads into markdown files stored within the application. Attackers can craft malicious markdown files with embedded JavaScript that executes system commands...

EUVD-2021-34816

Anote 1.0 contains a persistent cross-site scripting vulnerability that allows attackers to execute arbitrary code by injecting malicious payloads into markdown files stored within the application. Attackers can craft malicious markdown files with embedded JavaScript that executes system commands...

CVE-2021-47963 Anote 1.0 Persistent Cross-Site Scripting Leading to Code Execution

Anote 1.0 contains a persistent cross-site scripting vulnerability that allows attackers to execute arbitrary code by injecting malicious payloads into markdown files stored within the application. Attackers can craft malicious markdown files with embedded JavaScript that executes system commands...

CVE-2021-47963 Anote 1.0 Persistent Cross-Site Scripting Remote Code Execution

Anote 1.0 contains a persistent cross-site scripting vulnerability that allows attackers to execute arbitrary code by injecting malicious payloads into markdown files stored within the application. Attackers can craft malicious markdown files with embedded JavaScript that executes system commands...

CVE-2021-47963

Anote 1.0 contains a persistent cross-site scripting vulnerability that allows attackers to execute arbitrary code by injecting malicious payloads into markdown files stored within the application. Attackers can craft malicious markdown files with embedded JavaScript that executes system commands...

CVE-2021-47963

CVE-2021-47963 affects Anote 1.0 and describes a persistent cross-site scripting vulnerability in which attackers can inject malicious payloads into markdown files stored by the application. When a crafted markdown file containing embedded JavaScript is opened, it can execute system commands on t...

CVE-2026-4054

Mattermost disclosure CVE-2026-4054 affects Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, and 11.4.x

CVE-2026-4054: Improper Check for Unusual or Exceptional Conditions

Mattermost versions 11.5.x = 11.5.1, 10.11.x = 10.11.13, 11.4.x = 11.4.3 Fail to validate the response body of proxied images, which allows a remote attacker to enact client-side DoS via an SVG file served from an attacker-controlled origin under a non-SVG Content-Type header e.g. image/png...

anote 跨站脚本漏洞

Anote is an open-source note-taking application that supports Markdown format. Version 1.0 of Anote contains a cross-site scripting vulnerability. This vulnerability stems from a persistent cross-site scripting issue, which could allow attackers to execute arbitrary code by injecting malicious...