CVE-2026-47164: CWE-284: Improper Access Control in dani-garcia vaultwarden
Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO login flow checked the IdP email_verified claim only for new-user creation and not when SSO_SIGNUPS_MATCH_EMAIL=true linked an IdP identity to an existing local account, allowing an attacker-controlled IdP identity asserting a victim email address to bind to and authenticate as that account. This issue is fixed in version 1.36.0.
AI Analysis
Technical Summary
Vaultwarden, a Bitwarden-compatible server written in Rust, had a vulnerability (CWE-284) in its SSO login flow prior to version 1.36.0. The system checked the email_verified claim from the Identity Provider (IdP) only when creating new users, but failed to verify this claim when linking an IdP identity to an existing local account if the configuration SSO_SIGNUPS_MATCH_EMAIL=true was enabled. This allowed an attacker controlling an IdP identity to assert a victim's email address and bind to that victim's account, effectively bypassing proper access control and authenticating as the victim. The vulnerability is tracked as CVE-2026-47164 with a CVSS 3.1 score of 7.7 (high severity). The issue is resolved in Vaultwarden version 1.36.0.
Potential Impact
An attacker controlling an Identity Provider identity can link to and authenticate as an existing Vaultwarden user account by asserting the victim's email address without proper verification. This results in unauthorized access with high confidentiality and integrity impact, and low availability impact.
Mitigation Recommendations
Upgrade Vaultwarden to version 1.36.0 or later, where this vulnerability is fixed. Since this is a self-hosted product, administrators must apply the update themselves. Patch status is confirmed fixed in 1.36.0. No other mitigations are documented.
CVE-2026-47164: CWE-284: Improper Access Control in dani-garcia vaultwarden
Description
Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO login flow checked the IdP email_verified claim only for new-user creation and not when SSO_SIGNUPS_MATCH_EMAIL=true linked an IdP identity to an existing local account, allowing an attacker-controlled IdP identity asserting a victim email address to bind to and authenticate as that account. This issue is fixed in version 1.36.0.
CVSS v3.1
Score 7.7high
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
Vaultwarden, a Bitwarden-compatible server written in Rust, had a vulnerability (CWE-284) in its SSO login flow prior to version 1.36.0. The system checked the email_verified claim from the Identity Provider (IdP) only when creating new users, but failed to verify this claim when linking an IdP identity to an existing local account if the configuration SSO_SIGNUPS_MATCH_EMAIL=true was enabled. This allowed an attacker controlling an IdP identity to assert a victim's email address and bind to that victim's account, effectively bypassing proper access control and authenticating as the victim. The vulnerability is tracked as CVE-2026-47164 with a CVSS 3.1 score of 7.7 (high severity). The issue is resolved in Vaultwarden version 1.36.0.
Potential Impact
An attacker controlling an Identity Provider identity can link to and authenticate as an existing Vaultwarden user account by asserting the victim's email address without proper verification. This results in unauthorized access with high confidentiality and integrity impact, and low availability impact.
Mitigation Recommendations
Upgrade Vaultwarden to version 1.36.0 or later, where this vulnerability is fixed. Since this is a self-hosted product, administrators must apply the update themselves. Patch status is confirmed fixed in 1.36.0. No other mitigations are documented.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-18T21:25:34.496Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a57a83f68715ace43f80bf6
Added to database: 07/15/2026, 15:33:19 UTC
Last enriched: 07/15/2026, 15:48:31 UTC
Last updated: 07/15/2026, 16:03:40 UTC
Views: 3
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.