CVE-2026-27802 Vaultwarden: Privilege Escalation via Bulk Permission Update to Unauthorized Collections by Manager
A Manager user can escalate privileges by bulk updating permissions to access unauthorized collections in Vaultwarden.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-27802?
CVE-2026-27802 is a high-severity vulnerability in dani-garcia vaultwarden, published on 4 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Prior to version 1.35.4, there is a privilege escalation vulnerability via bulk permission update to unauthorized collections by Manager. This issue has been patched in version 1.35.4.
Which versions are affected by CVE-2026-27802?
2 open source packages ship an affected version, including vaultwarden. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
vaultwarden crates.io | All versions | 1.35.4 |
vaultwarden crates.io | All versions | 1.35.4 |
Products include Dani-Garcia Vaultwarden.
How do I fix CVE-2026-27802?
Upgrade vaultwarden to 1.35.4 or later.
Is CVE-2026-27802 being exploited?
There is no known exploitation of CVE-2026-27802 in the wild and no public exploit code.
Other vulnerabilities in dani-garcia vaultwarden
- CVE-2024-55225 Vaultwarden vulnerable to user impersonation
- CVE-2024-55224 Vaultwarden HTML injection vulnerability
- CVE-2024-39924 Privilege escalation in n/a
- CVE-2026-43912 Vaultwarden: Cross-Org Group Binding Enables Unauthorized Read And Write Access Into Another Organization
- CVE-2026-27803 Vaultwarden: Collection Management Operations Allowed Without `manage` Verification for Manager Role
Sources
Also known as GHSA-r32r-j5jq-3w4m.