CVE-2026-46419

Yubico webauthn-server-core (aka java-webauthn-server) 2.8.0 is affected by a vulnerability in the second factor flow where a function’s return value was not checked, enabling impersonation. The issue is fixed in version 2.8.2 (released with a security advisory from Yubico). Affected product/vers...

com.yubico:webauthn-server-attestation (>=2.8.0, <=2.8.1), nl.astraeus:kotlin-partials-jvm (>=2.2.0, <=3.0.0) +2 more potentially affected by CVE-2026-46419 via com.yubico:webauthn-server-core (>=2.8.0, <=2.8.1)

com.yubico:webauthn-server-core MAVEN version =2.8.0, =2.8.0, =2.2.0, =8.0.0-rc1, =8.0.0-rc1, =8.0.0-rc3 Source cves: CVE-2026-46419 Source advisory: MEND:CVE-2026-46419...

CVE-2026-46419

Yubico webauthn-server-core aka java-webauthn-server 2.8.0 before 2.8.2 incorrectly checks a function's return value in the second factor flow, leading to impersonation...

CVE-2026-46419

Yubico webauthn-server-core aka java-webauthn-server 2.8.0 before 2.8.2 incorrectly checks a function's return value in the second factor flow, leading to impersonation...

PT-2026-40845

Yubico webauthn-server-core aka java-webauthn-server 2.8.0 before 2.8.2 incorrectly checks a function's return value in the second factor flow, leading to impersonation...

CVE-2026-46419

Yubico webauthn-server-core aka java-webauthn-server 2.8.0 before 2.8.2 incorrectly checks a function's return value in the second factor flow, leading to impersonation...

CVE-2026-31835

A flaw was found in Vaultwarden. The WebAuthn authentication process in versions 1.35.4 and earlier incorrectly updates user credential information before fully verifying the authentication signature. This allows an attacker who possesses a user's password, but cannot complete the WebAuthn...

Webauthn has a User Verification Downgrade via Default-Open ClientOverridePolicy

Summary In version 5.3.0 of the Symfony bundle, Webauthn\Bundle\Policy\ClientOverridePolicy defaulted to allowing all client overrides, including userVerification. A client could send "userVerification": "discouraged" in the assertion or attestation options request to override a server-configured...

GHSA-H4FW-6R7F-W494 Webauthn has a User Verification Downgrade via Default-Open ClientOverridePolicy

Summary In version 5.3.0 of the Symfony bundle, Webauthn\Bundle\Policy\ClientOverridePolicy defaulted to allowing all client overrides, including userVerification. A client could send "userVerification": "discouraged" in the assertion or attestation options request to override a server-configured...

webauthn-rs-core/webauthn-authenticator-rs: Origin validation mismatch possible when subdomains are allowed

Summary webauthn-rs-core Relying Partyrp and webauthn-authenticator-rs client checked that an Origin in CollectedClientDataorigin is valid for an RP IDrpid with str::endswithends-with, without checking for a dot . before the RP ID when allowing subdomainsregisterable-suffix. This check is flawed,...

sshkey-attest (0.5.0), wauthn (>=0.1.0, <=0.1.1) +2 more potentially affected by unknown CVE via webauthn-rs-core (>=0.4.9, <=0.5.0)

webauthn-rs-core CARGO version =0.4.9, =0.1.0, =0.4.1-beta.2, =0.5.0 Source cves: unknown CVE Source advisory: GHSA-22W3-693W-X895...

GHSA-22W3-693W-X895 webauthn-rs-core/webauthn-authenticator-rs: Origin validation mismatch possible when subdomains are allowed

Summary webauthn-rs-core Relying Partyrp and webauthn-authenticator-rs client checked that an Origin in CollectedClientDataorigin is valid for an RP IDrpid with str::endswithends-with, without checking for a dot . before the RP ID when allowing subdomainsregisterable-suffix. This check is flawed,...

sshkey-attest (0.5.0), wauthn (>=0.1.0, <=0.1.1) +2 more potentially affected by unknown CVE via webauthn-rs-core (>=0.4.9, <=0.5.0)

webauthn-rs-core CARGO version =0.4.9, =0.1.0, =0.4.1-beta.2, =0.5.0 Source cves: unknown CVE Source advisory: OSV:GHSA-22W3-693W-X895...

PT-2026-39163

Summary webauthn-rs-core Relying Partyrp and webauthn-authenticator-rs client checked that an Origin in CollectedClientDataorigin is valid for an RP IDrpid with str::ends withends-with, without checking for a dot . before the RP ID when allowing subdomainsregisterable-suffix. This check is flawed...

CVE-2026-31835

Vaultwarden is a Bitwarden-compatible server written in Rust. In versions 1.35.4 and earlier, the WebAuthn authentication flow in validatewebauthnlogin updates persistent credential metadata 1backupeligible1 and 1backupstate flags1 based on unverified authenticatorData before signature validation...

CVE-2026-31835 Vaultwarden WebAuthn credential metadata tampered before signature verification

Vaultwarden is a Bitwarden-compatible server written in Rust. In versions 1.35.4 and earlier, the WebAuthn authentication flow in validatewebauthnlogin updates persistent credential metadata 1backupeligible1 and 1backupstate flags1 based on unverified authenticatorData before signature validation...

CVE-2026-31835

Vaultwarden is a Bitwarden-compatible server written in Rust. In versions 1.35.4 and earlier, the WebAuthn authentication flow in validatewebauthnlogin updates persistent credential metadata 1backupeligible1 and 1backupstate flags1 based on unverified authenticatorData before signature validation...

CVE-2026-31835 Vaultwarden WebAuthn credential metadata tampered before signature verification

Vaultwarden is a Bitwarden-compatible server written in Rust. In versions 1.35.4 and earlier, the WebAuthn authentication flow in validatewebauthnlogin updates persistent credential metadata 1backupeligible1 and 1backupstate flags1 based on unverified authenticatorData before signature validation...

CVE-2026-31835 Vaultwarden WebAuthn credential metadata tampered before signature verification

Vaultwarden is a Bitwarden-compatible server written in Rust. In versions 1.35.4 and earlier, the WebAuthn authentication flow in validatewebauthnlogin updates persistent credential metadata 1backupeligible1 and 1backupstate flags1 based on unverified authenticatorData before signature validation...

CVE-2026-31835: Insufficient Verification of Data Authenticity

Vaultwarden is a Bitwarden-compatible server written in Rust. In versions 1.35.4 and earlier, the WebAuthn authentication flow in validatewebauthnlogin updates persistent credential metadata 1backupeligible1 and 1backupstate flags1 based on unverified authenticatorData before signature validation...