Jeremy Evans Rodauth up to 2.46.x OTP Feature authentication replay

Summaryinfo

A vulnerability marked as critical has been reported in Jeremy Evans Rodauth up to 2.46.x. The affected element is an unknown function of the component OTP Feature. This manipulation causes authentication replay. This vulnerability is handled as CVE-2026-82470. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Jeremy Evans Rodauth up to 2.46.x. It has been declared as critical. Affected by this vulnerability is an unknown code of the component OTP Feature. The manipulation with an unknown input leads to a authentication replay vulnerability. The CWE definition for the vulnerability is CWE-294. A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Rodauth before 2.47.0 contains a time-based one-time password reuse vulnerability in the otp feature that fails to track the last accepted code timestamp. Attackers who observe a valid TOTP code can replay it during the drift window to bypass the second authentication factor.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-82470 since 08/29/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1040 according to MITRE ATT&CK.

Upgrading to version 2.47.0 eliminates this vulnerability.

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Productinfo

Vendor

• Jeremy Evans

Name

• Rodauth

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30
• 2.31
• 2.32
• 2.33
• 2.34
• 2.35
• 2.36
• 2.37
• 2.38
• 2.39
• 2.40
• 2.41
• 2.42
• 2.43
• 2.44
• 2.45
• 2.46

CPE 2.3info

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CPE 2.2info

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