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PatchSiren cyber security CVE debrief

CVE-2026-60104 bitwarden CVE debrief

CVE-2026-60104 is a critical vulnerability in Bitwarden Server before version 2026.6.0. The issue allows a low-privileged organization member to obtain another user's vault key and a victim-scoped access token. This is achieved by creating a Trusted Device Encryption authentication request bound to an attacker-controlled public key. The request is readable from an unauthenticated endpoint once approved, resulting in the disclosure of the victim's vault key and potential account takeover.

Vendor
bitwarden
Product
server
CVSS
CRITICAL 9.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-08
Original CVE updated
2026-07-20
Advisory published
2026-07-08
Advisory updated
2026-07-20

Who should care

Users of Bitwarden Server, especially those with low-privileged organization members, should be aware of this vulnerability. Immediate action is recommended to upgrade to version 2026.6.0 or later to mitigate the risk.

Technical summary

The vulnerability exists in the authentication request handling of Bitwarden Server. Specifically, the server does not verify that the email in a POST /auth-requests/admin-request body belongs to the authenticated caller. This oversight allows an attacker to create a Trusted Device Encryption authentication request bound to their public key. Once approved, the request is accessible via an unauthenticated endpoint, enabling the attacker to obtain the victim's vault key and a victim-scoped access token. This could lead to unauthorized access to sensitive information and potential account takeover.

Defensive priority

High

Recommended defensive actions

  • Upgrade Bitwarden Server to version 2026.6.0 or later
  • Review and restrict access to the /auth-requests/admin-request endpoint
  • Monitor for suspicious activity related to authentication requests
  • Implement additional logging and monitoring for low-privileged organization members' activities
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed

Evidence notes

The CVE record was published on 2026-07-08T20:17:00.413Z and was last modified on 2026-07-10T18:01:31.563Z. The NVD entry is currently Awaiting Analysis. Multiple sources, including GitHub commits, pull requests, and release notes, as well as a blog post and a vulnerability advisory, provide context for this vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-60104 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-60104

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-60104 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-60104

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.