GHSA-GM37-52C6-37MW pymdown-extensions: exponential-backtracking ReDoS in caret, tilde, betterem, and magiclink inline processors

Summary Four inline processors in pymdown-extensions contain regular expressions with exponential backtracking. A single untrusted Markdown line under 50 bytes drives markdown.markdown into unbounded CPU on the rendering thread seconds at 45 bytes, growing exponentially with each added character...

CVE-2026-67422

CVE-2026-67422 affects pymdown-extensions up to version 11.0, where four inline processors—caret, tilde, betterem, and magiclink—use regex patterns whose groups can partition delimiter runs in exponentially many ways. This causes catastrophic backtracking and unbounded CPU usage when rendering a ...

CVE-2026-67422 pymdown-extensions: Exponential-backtracking ReDoS in caret, tilde, betterem, and magiclink inline processors

pymdown-extensions is a collection of extensions for the Python Markdown library. In versions up to and including 11.0, four inline processors caret, tilde, betterem, and magiclink use regular expressions whose content groups can partition a run of delimiter characters in exponentially many ways,...

CVE-2026-67422 pymdown-extensions: Exponential-backtracking ReDoS in caret, tilde, betterem, and magiclink inline processors

pymdown-extensions is a collection of extensions for the Python Markdown library. In versions up to and including 11.0, four inline processors caret, tilde, betterem, and magiclink use regular expressions whose content groups can partition a run of delimiter characters in exponentially many ways,...

MagicLink: Insecure Deserialization of MagicLink Actions Leads to Remote Code Execution

Description MagicLink stores serialized action objects in the magiclinks.action database column and deserializes them without integrity validation or class allowlisting in src/MagicLink.php and src/Actions/ResponseAction.php. An attacker with the ability to manipulate database records e.g., via S...

Deserialization of Untrusted Data

Overview cesargb/laravel-magiclink is a Create secure link for access to private data or login in Laravel without password Affected versions of this package are vulnerable to Deserialization of Untrusted Data via the magiclinks.action database column during the deserialization process. An attacke...