Medium severity5.4NVD Advisory· Published Mar 4, 2026· Updated Jun 17, 2026
CVE-2026-27898
CVE-2026-27898
Description
Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Prior to version 1.35.4, an authenticated regular user can specify another user’s cipher_id and call "PUT /api/ciphers/{id}/partial" Even though the standard retrieval API correctly denies access to that cipher, the partial update endpoint returns 200 OK and exposes cipherDetails (including name, notes, data, secureNote, etc.). This issue has been patched in version 1.35.4.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
vaultwardencrates.io | < 1.35.4 | 1.35.4 |
Affected products
3cpe:2.3:a:dani-garcia:vaultwarden:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:dani-garcia:vaultwarden:*:*:*:*:*:*:*:*range: <1.35.4
- (no CPE)range: < 1.35.4
Patches
Vulnerability mechanics
References
2- github.com/advisories/GHSA-w9f8-m526-h7fhghsaADVISORY
- github.com/dani-garcia/vaultwarden/security/advisories/GHSA-w9f8-m526-h7fhnvdVendor AdvisoryWEB
News mentions
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