CVE-2026-89407

NumberInput.looksLikeValidNumber in FasterXML jackson-core pre-validates "stringified numbers" with two regular expressions: PATTERNFLOAT +-?0-9.?0-9+eE+-?0-9+?, present since 2.17.0, and PATTERNFLOATTRAILINGDOT, added in 2.17.2. PATTERNFLOAT places adjacent quantifiers over the same character...

CVE-2026-89407

FasterXML jackson-core (versions 2.17.0+) is vulnerable to a ReDoS (Regular Expression Denial of Service) in NumberInput.looksLikeValidNumber(). The PATTERN_FLOAT regex uses adjacent quantifiers over the same character class, causing quadratic backtracking when an input ultimately fails to match....