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CVE-2026-104259 affects ModSecurity's t:removeComments transformation, which mishandles the character immediately following a comment terminator. This processing error allows a remote, unauthenticated attacker to bypass affected security rules without user interaction. Affected packages include modsecurity, modsecurity-apache, and Amazon Linux mod_security packages; precise vulnerable version ranges are not available.
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2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A rule-bypass vulnerability in ModSecurity's t:removeComments transformation caused by mishandling the character following a comment terminator. The advisory rates it Medium with a CVSS v3.1 score of 5.8; its vector indicates network exploitation requiring no privileges or user interaction, with low confidentiality impact. Fixes are pending for the listed Amazon Linux packages.
An unpatched vulnerability listed for ModSecurity and its Apache integration packages. The CVSS v3 vector indicates network-based exploitation with low complexity, no required privileges or user interaction, and high confidentiality, integrity, and availability impacts. The content does not describe the underlying flaw.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.