Weakness (CWE)
CWE-294: Authentication Bypass by Capture-replay
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).
More detail
Capture-replay attacks are common and can be difficult to defeat without cryptography. They are a subset of network injection attacks that rely on observing previously-sent valid commands, then changing them slightly if necessary and resending the same commands to the server.
How to prevent it (2 mitigations)
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Architecture and Design
Utilize some sequence or time stamping functionality along with a checksum which takes this into account in order to ensure that messages can be parsed only once.
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Architecture and Design
Since any attacker who can listen to traffic can see sequence numbers, it is necessary to sign messages with some kind of cryptography to ensure that sequence numbers are not simply doctored along with content.
Source: MITRE CWE-294
11 results · Clear filters · Feed
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Low 3.7
Action Mailbox: Possible signature replay in Action Mailbox Mailgun ingress
Action Mailbox routes incoming emails to controller-like mailboxes for processing in Rails. Prior to 8.1.4.1 and 8.0.5.2, the Action Mailbox Mailgun ingress authenticates a request with an HMAC of the timestamp and token parameters concatenated without a sepa…
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Low 3.1
SAML SSO - Service Provider - Moderately critical - Insufficient replay protection - SA-CONTRIB-2026-150
Authentication Bypass by Capture-replay vulnerability in Drupal SAML SSO - Service Provider allows Remote Services with Stolen Credentials. This issue affects SAML SSO - Service Provider versions: from 0.0.0 to 3.2.0.
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Low 2.6
HCL DFXAnalytics is affected by a Login Replay Attack vulnerability
HCL DFXAnalytics is affected by a Login Replay Attack vulnerability. The application allows a remote attacker to intercept, delay, or fraudulently retransmit valid authentication data to achieve unauthorized access. To mitigate this risk, the application must…
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Low —
nebula-mesh: Signed-poll nonce LRU is in-memory and bounded; replay survives restart + eviction
`internal/api/pop/nonce.go:25,40,86` + `internal/api/server.go:38` — the signed-poll nonce cache is an in-process LRU sized at 65,536 entries. `internal/api/updates.go:31` sets `pollClockSkew = 5 * time.Minute` as the replay window. ## Affected All released v…
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Low 2.0
Apache Shiro: Remember-me cookie isn't checked for expiry on the server
"Remember me" cookie age is not verified on the server. This potentially allows an attacker to intercept a valid cookie and reuse it indefinitely, even after the configured expiration time has passed. This issue affects all Apache Shiro versions from 1.2.4 th…
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Low 3.7
WSS4J validation does not use configured replay cache
Wss4jSecurityInterceptor did not consistently wire Apache WSS4J ReplayCache instances into RequestData for validation-time checks. As a result, protections against replay of UsernameToken nonces and creation timestamps, Timestamp elements, and certain SAML on…
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Low 3.1
Besen BS20 EV Charging Station BLE/WiFi authentication replay
A security vulnerability has been detected in Besen BS20 EV Charging Station up to 20260426. This affects an unknown part of the component BLE/WiFi. Such manipulation leads to authentication bypass by capture-replay. The attack must be carried out from within…
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Low 2.8
arnika is affected by medium-severity issues in UDP rotation, PQC handling, and KMS TLS
### Summary Three medium-severity issues in arnika affecting the UDP key-rotation protocol, PQC key file handling, and KMS TLS client. All require specific preconditions to exploit and do not allow direct code execution or immediate key extraction. A self-con…
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Low 3.7
OpenClaw's voice-call Twilio replay dedupe now bound to authenticated webhook identity
### Summary The voice-call Twilio webhook path accepted replay/dedupe identity from unsigned request metadata (`i-twilio-idempotency-token`), enabling replayed signed requests to bypass replay detection and manager dedupe by mutating only that header. ### Aff…
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Low 3.1
DJI Mavic Mini/Air/Spark/Mini SE Enhanced Wi-Fi Pairing authentication replay
A vulnerability has been found in DJI Mavic Mini, Air, Spark and Mini SE up to 01.00.0500. Affected by this vulnerability is an unknown functionality of the component Enhanced Wi-Fi Pairing. The manipulation leads to authentication bypass by capture-replay. T…
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Low 2.7
CVE-2024-38823 Salt Advisory
Salt's request server is vulnerable to replay attacks when not using a TLS encrypted transport.