CVE-2026-115348

A flaw was found in mistune. A remote, unauthenticated attacker can exploit an algorithmic complexity vulnerability in the inline link parser by submitting specially crafted Markdown input containing numerous unbalanced brackets. This forces repeated forward scans during text parsing, consuming...

CVE-2026-115352

A flaw was found in mistune. This algorithmic complexity vulnerability allows an unauthenticated remote attacker to cause a Denial of Service DoS by submitting specially crafted Markdown input containing long sequences of unmatched bracket characters. When parsing this malformed input, the inline...

CVE-2026-115352

Mistune before 3.3.0 contains an algorithmic complexity vulnerability in the inline link parser that allows unauthenticated attackers to exhaust CPU by submitting long runs of unmatched '' characters. Attackers can send small markdown payloads that trigger ON^2 parselinktext and parselinklabel...

CVE-2026-115352

Mistune versions before 3.3.0 are vulnerable to an algorithmic complexity issue in the inline link parser . An unauthenticated attacker can submit small markdown payloads containing long sequences of unmatched '[' characters to trigger O(N^2) parse_link_text and parse_link_label probing. This all...

EUVD-2026-108421

Mistune before 3.3.0 contains an algorithmic complexity vulnerability in the inline link parser that allows unauthenticated attackers to exhaust CPU by submitting long runs of unmatched '' characters. Attackers can send small markdown payloads that trigger ON^2 parselinktext and parselinklabel...

CVE-2026-115352 Mistune before 3.3.0 Quadratic-Time DoS via Unmatched Brackets in Inline Parser

Mistune before 3.3.0 contains an algorithmic complexity vulnerability in the inline link parser that allows unauthenticated attackers to exhaust CPU by submitting long runs of unmatched '' characters. Attackers can send small markdown payloads that trigger ON^2 parselinktext and parselinklabel...