9.1
CVE-2026-43639
- EPSS 0.6%
- Veröffentlicht 11.05.2026 18:16:36
- Zuletzt bearbeitet 16.05.2026 03:04:41
- Quelle disclosure@vulncheck.com
- CVE-Watchlists
- Unerledigt
Bitwarden Server < 2026.4.0 Missing Authorization via Provider Clients
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).| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.6% | 0.438 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| nvd@nist.gov | 9.1 | 2.3 | 6 |
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
|
| disclosure@vulncheck.com | 8.9 | 0 | 0 |
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
|
| disclosure@vulncheck.com | 8 | 1.3 | 6 |
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
|
CWE-862 Missing Authorization
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
https://github.com/bitwarden/server/commit/0918bfdda6f5eec391c69bd9074f6aef4eac0b1d
https://github.com/bitwarden/server/pull/7372
https://github.com/bitwarden/server/releases/tag/v2026.4.0
https://sanjokkarki.com.np/blog/bitwarden-provider-takeover
https://www.vulncheck.com/advisories/bitwarden-server-missing-authorization-via-provider-clients