CVE-2026-47159: CWE-287: Improper Authentication in dani-garcia vaultwarden
Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO discovery and pre-validation flow returned organization-related SSO metadata including organizationIdentifier values for arbitrary email addresses and allowed a valid pre-validation JWT to be obtained with only the discovered identifier, enabling SSO-enabled organization enumeration and authentication workflow abuse. This issue is fixed in version 1.36.0.
AI Analysis
Technical Summary
CVE-2026-47159 is an improper authentication vulnerability (CWE-287) in Vaultwarden, a Bitwarden-compatible server written in Rust. Before version 1.36.0, the SSO discovery and pre-validation process exposed organization-related metadata such as organizationIdentifier for arbitrary email addresses. This exposure allowed attackers to obtain a valid pre-validation JWT using only the discovered identifier, facilitating unauthorized enumeration of SSO-enabled organizations and abuse of the authentication workflow. The vulnerability has a CVSS 4.0 base score of 6.9 (medium severity) and was publicly disclosed on 2026-07-15. The flaw is resolved in Vaultwarden version 1.36.0.
Potential Impact
An attacker can enumerate organizations enabled for SSO and abuse the authentication workflow by obtaining valid pre-validation JWTs without proper authorization. This could lead to unauthorized access attempts against SSO-enabled organizations. There are no known exploits in the wild at the time of disclosure.
Mitigation Recommendations
Upgrade Vaultwarden to version 1.36.0 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are indicated. Patch status is confirmed by the vendor advisory stating the issue is fixed in 1.36.0.
CVE-2026-47159: CWE-287: Improper Authentication in dani-garcia vaultwarden
Description
Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO discovery and pre-validation flow returned organization-related SSO metadata including organizationIdentifier values for arbitrary email addresses and allowed a valid pre-validation JWT to be obtained with only the discovered identifier, enabling SSO-enabled organization enumeration and authentication workflow abuse. This issue is fixed in version 1.36.0.
CVSS v4.0
Score 6.9medium
Affected software
pkg:cargo/github/dani-garcia/vaultwardenRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-47159 is an improper authentication vulnerability (CWE-287) in Vaultwarden, a Bitwarden-compatible server written in Rust. Before version 1.36.0, the SSO discovery and pre-validation process exposed organization-related metadata such as organizationIdentifier for arbitrary email addresses. This exposure allowed attackers to obtain a valid pre-validation JWT using only the discovered identifier, facilitating unauthorized enumeration of SSO-enabled organizations and abuse of the authentication workflow. The vulnerability has a CVSS 4.0 base score of 6.9 (medium severity) and was publicly disclosed on 2026-07-15. The flaw is resolved in Vaultwarden version 1.36.0.
Potential Impact
An attacker can enumerate organizations enabled for SSO and abuse the authentication workflow by obtaining valid pre-validation JWTs without proper authorization. This could lead to unauthorized access attempts against SSO-enabled organizations. There are no known exploits in the wild at the time of disclosure.
Mitigation Recommendations
Upgrade Vaultwarden to version 1.36.0 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are indicated. Patch status is confirmed by the vendor advisory stating the issue is fixed in 1.36.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-18T21:25:34.496Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a57a83f68715ace43f80bea
Added to database: 07/15/2026, 15:33:19 UTC
Last enriched: 07/15/2026, 15:50:02 UTC
Last updated: 07/15/2026, 16:03:40 UTC
Views: 4
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