CVE-2026-100834

The http4k library's Digest authentication module (org.http4k:http4k-security-digest ) is vulnerable in versions before 6.48.0.0 , 5.42.0.0 , and 4.51.0.0 . The root cause is that the nonceVerifier parameter in ServerFilters.DigestAuth and DigestAuthProvider defaults to { true }, meaning every no...

CVE-2026-100834 http4k before 6.48.0.0 Digest Authentication Replay Protection Bypass

http4k's Digest authentication module org.http4k:http4k-security-digest before versions 6.48.0.0, 5.42.0.0 and 4.51.0.0 defaults the nonceVerifier parameter of ServerFilters.DigestAuth and DigestAuthProvider to true , so every nonce is accepted regardless of its value, age, or prior use...

CVE-2026-100834 http4k before 6.48.0.0 Digest Authentication Replay Protection Bypass

http4k's Digest authentication module org.http4k:http4k-security-digest before versions 6.48.0.0, 5.42.0.0 and 4.51.0.0 defaults the nonceVerifier parameter of ServerFilters.DigestAuth and DigestAuthProvider to true , so every nonce is accepted regardless of its value, age, or prior use...

CVE-2026-100834 http4k before 6.48.0.0 Digest Authentication Replay Protection Bypass

http4k's Digest authentication module org.http4k:http4k-security-digest before versions 6.48.0.0, 5.42.0.0 and 4.51.0.0 defaults the nonceVerifier parameter of ServerFilters.DigestAuth and DigestAuthProvider to true , so every nonce is accepted regardless of its value, age, or prior use...

CVE-2026-90997

Keycloak deployments in stateless mode with MySQL or MariaDB are affected by a replay protection bypass caused by a mismatch in row-count semantics between the database driver and Keycloak's application logic. An attacker who intercepts single-use security artifacts—such as JWT client assertions ...

CVE-2026-90997

A flaw was found in Keycloak. When deployed in stateless mode with MySQL or MariaDB, a mismatch in row-count semantics between the database driver and Keycloak's application logic allows an attacker to bypass replay protection. This vulnerability enables an attacker who intercepts single-use...

CVE-2026-90997 Keycloak-services: keycloak: replay protection bypass leads to unauthorized access via database driver semantics mismatch

A flaw was found in Keycloak. When deployed in stateless mode with MySQL or MariaDB, a mismatch in row-count semantics between the database driver and Keycloak's application logic allows an attacker to bypass replay protection. This vulnerability enables an attacker who intercepts single-use...

PT-2026-95069

Name of the Vulnerable Software and Affected Versions Keycloak versions 26.7.0 through 26.7.3 Description A flaw exists when the software is deployed in stateless mode using MySQL or MariaDB. A mismatch in row-count semantics between the database driver and the application logic allows the replay...

CVE-2026-63925

A flaw was found in the Linux kernel's MACsec Media Access Control Security subsystem. When using Extended Packet Numbering XPN, a vulnerability exists where the replay protection mechanism can be bypassed. An attacker can exploit an integer overflow when the packet number reaches its maximum...

CVE-2026-44109 OpenClaw < 2026.4.15 - Authentication Bypass in Feishu Webhook and Card-Action Validation

OpenClaw before 2026.4.15 contains an authentication bypass vulnerability in Feishu webhook and card-action validation that allows unauthenticated requests to reach command dispatch. Missing encryptKey configuration and blank callback tokens fail open instead of rejecting requests, enabling...

CVE-2026-35618

OpenClaw before 2026.3.23 contains a replay identity vulnerability in Plivo V2 signature verification that allows attackers to bypass replay protection by modifying query parameters. The verification path derives replay keys from the full URL including query strings instead of the canonicalized...

CVE-2026-35618

OpenClaw OpenClaw package (Plivo V2 verification) vulnerability CVE-2026-35618 affects OpenClaw before 2026.3.23. The replay protection uses a replay key derived from the full verification URL, including query strings, instead of the base canonical URL. This allows an attacker to mint new verifie...

PT-2026-30531

Summary Before v2026.3.23, the Plivo V2 verification path treated query-only variants of the same signed request as fresh verified work. Plivo V2 signatures authenticate baseUrl + nonce, but the replay key was derived from the full verification URL including the query string, so unsigned query-on...

CVE-2022-35961: Improper Validation of Integrity Check Value

OpenZeppelin Contracts is a library for secure smart contract development. The functions ECDSA.recover and ECDSA.tryRecover are vulnerable to a kind of signature malleability due to accepting EIP-2098 compact signatures in addition to the traditional 65 byte signature format. This is only an issu...

CVE-2016-2201

Siemens SIMATIC S7-1500 CPU devices before 1.8.3 allow remote attackers to bypass a replay protection mechanism via packets on TCP port 102...

CVE-2016-2201: Improper Input Validation

Siemens SIMATIC S7-1500 CPU devices before 1.8.3 allow remote attackers to bypass a replay protection mechanism via packets on TCP port 102...

PT-2016-5062

Name of the Vulnerable Software and Affected Versions Siemens SIMATIC S7-1500 CPU devices versions prior to 1.8.3 Description The issue allows remote attackers to bypass a replay protection mechanism. This can be achieved by sending packets on TCP port 102. Recommendations For versions prior to...

CVE-2006-4436: Undefined Security Weakness

isakmpd in OpenBSD 3.8, 3.9, and possibly earlier versions, creates Security Associations SA with a replay window of size 0 when isakmpd acts as a responder during SA negotiation, which allows remote attackers to replay IPSec packets and bypass the replay protection...