Bitwarden Server < 2026.4.0 Missing Authorization via Provider Clients
41Vexday Risk Score
Sem sinal de exploração. Ela tem prova de conceito pública.
ssvc Attendcvss 8.9epss 0.6%
probabilidade de exploração
0.6%top 55% das CVEs
exploração observada
nãonenhuma fonte reporta
1 exploit(s) público(s)
Bitwarden Server prior to v2026.4.0 contains a missing authorization vulnerability that allows a provider service user to add an arbitrary organization to their provider via `POST /providers/{providerId}/clients/existing`, resulting in takeover of the target organization; self-hosted installations are unaffected as this endpoint is restricted to Cloud via SelfHosted(NotSelfHostedOnly = true).
CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Produtos afetados
bitwarden · serverPoCs públicas encontradas — 1
cve_referencesanjokkarki.com.np/blog/bitwarden-provider-takeovernão verificado⚠ Recursos públicos, para você avaliar a exposição de sistemas que controla ou está autorizado a testar. Teste apenas com autorização.
Referências
https://github.com/bitwarden/server/commit/0918bfdda6f5eec391c69bd9074f6aef4eac0b1dhttps://github.com/bitwarden/server/pull/7372https://github.com/bitwarden/server/releases/tag/v2026.4.0https://sanjokkarki.com.np/blog/bitwarden-provider-takeoverhttps://www.vulncheck.com/advisories/bitwarden-server-missing-authorization-via-provider-clients