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Vulnerability record · CVE-2026-27803 · published 4 March 2026

CVE-2026-27803: Dani-garcia vaultwarden improper privilege management vulnerability

DDani Garcia · Vaultwarden

Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Prior to version 1.35.4, when a Manager has manage=false for a given collection, they can still perform several management operations as long as they have access to the collection. This issue has been patched in version 1.35.4.

8.3 CVSS 3.1 High EPSS 0.37% · top 71.3% CWE-269 · Improper privilege managementCWE-285 · Improper authorization
8.3CVSS 3.1 base score
0.37%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Prior to version 1.35.4, when a Manager has manage=false for a given collection, they can still perform several management operations as long as they have access to the collection. This issue has been patched in version 1.35.4.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-h4hq-rgvh-wh27 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-43914Dani-garcia vaultwarden improper restriction of authentication attempts vulnerabilityVaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.35.4, there is a security vulnerability in Vaultwarden that allows bypassing…EPSS 0.49%9.8CVE-2024-55225Dani-garcia vaultwarden incorrect default permissions vulnerabilityAn issue in the component src/api/identity.rs of Vaultwarden prior to v1.32.5 allows attackers to impersonate users, including Administrators, via a …EPSS 0.61%9.6CVE-2024-55224Dani-garcia vaultwarden cross-site scripting vulnerabilityAn HTML injection vulnerability in Vaultwarden prior to v1.32.5 allows attackers to execute arbitrary code via injecting a crafted payload into the u…EPSS 0.83%8.8CVE-2024-39924Dani-garcia vaultwarden incorrect default permissions vulnerabilityAn issue was discovered in Vaultwarden (formerly Bitwarden_RS) 1.30.3. A vulnerability has been identified in the authentication and authorization pr…EPSS 13%8.7CVE-2026-43912Dani-garcia vaultwarden improper authorization vulnerabilityVaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.35.5, Vaultwarden does not enforce that a groups_users.users_organizations_u…EPSS 0.40%8.3CVE-2026-27802Dani-garcia vaultwarden improper privilege management vulnerabilityVaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Prior to version 1.35.4, there is a privile…EPSS 0.37%8.1CVE-2026-43913Dani-garcia vaultwarden incorrect authorization vulnerabilityVaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.35.5, Vaultwarden allows an unconfirmed organization owner to purge the enti…EPSS 0.40%8.1CVE-2026-43911Dani-garcia vaultwarden insufficient session expiration vulnerabilityVaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.35.5, refresh tokens are not invalidated when the user's security_stamp is r…EPSS 0.31%

Source: NIST National Vulnerability Database (record CVE-2026-27803), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.