Threats Tagged 'cve-2026-53424'
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Threats Tagged 'cve-2026-53424'
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CVE-2026-53424: CWE-294 Authentication Bypass by Capture-replay in dropbox samlyCVE-2026-53424 0 Authentication Bypass by Capture-replay vulnerability in dropbox samly allows an attacker to authenticate as the subject of a captured SAML assertion by resubmitting it. Samly.Helper.decode_idp_auth_resp/3 in lib/samly/helper.ex calls esaml_sp:validate_assertion/2, whose default duplicate detector is a no-op. The /3 arity accepting a DuplicateFun exists in esaml and implements the check, but Samly never calls it and offers no configuration to supply one, so the SAML 2.0 Web Browser SSO Profile requirement that a bearer assertion be used once is unenforced. An attacker holding a valid SAMLResponse obtained from the network, from browser history, or from logs can submit the identical bytes repeatedly until the assertion's NotOnOrAfter passes, each time establishing a session as the assertion's subject. This issue affects samly: from 0.3.0 onward. Join the discussion | CVE Database V5 | 08/20/2026, 17:27:11 UTC Added: 08/20/2026, 17:52:46 UTC |
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