CVE-2026-31835: falha de média gravidade em dani-garcia vaultwarden
Vaultwarden WebAuthn credential metadata tampered before signature verification
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 5.3epss 0.2%
Vaultwarden is a Bitwarden-compatible server written in Rust. In versions 1.35.4 and earlier, the WebAuthn authentication flow in `validate_webauthn_login()` updates persistent credential metadata (1backup_eligible1 and 1backup_state flags1) based on unverified `authenticatorData` before signature validation is performed. An attacker who knows a user's password but cannot produce a valid WebAuthn signature can permanently modify the stored backup flags for that user's credential. If signature verification fails, the database update is not rolled back. This can result in a persistent denial of service of WebAuthn two-factor authentication for affected credentials. This issue has been fixed in version 1.35.5.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Produtos afetados
dani-garcia · vaultwardenCVEs relacionadas — dani-garcia vaultwarden
No mesmo produto, das mais perigosas para as menos.
CVE-2025-24364HIGHvaultwarden allows RCE in the admin panelEPSS 1.0%CVE-2025-24365HIGHvaultwarden allows escalation of privilege via variable confusion in OrgHeaders traitEPSS 0.7%CVE-2026-47159MEDIUMVaultwarden: Authentication Flow Information Disclosure in SSO Discovery Allows Organization Enumeration and Pre-Validation Token ExposureEPSS 0.5%CVE-2026-26012MEDIUMvaultwarden has Full Cipher Enumeration Ignoring Organization Collection PermissionsEPSS 0.5%CVE-2026-47164HIGHVaultwarden: SSO Email Auto-Link Can Bind an Existing Local Account to an Attacker-Controlled IdP IdentityEPSS 0.4%CVE-2026-95814HIGHVaultwarden through 1.37.3 Authorization Bypass via Missing Status CheckEPSS 0.4%