CVE-2026-27801
Vaultwarden: 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement
Description
Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Vaultwarden versions 1.34.3 and prior are susceptible to a 2FA bypass when performing protected actions. An attacker who gains authenticated access to a user’s account can exploit this bypass to perform protected actions such as accessing the user’s API key or deleting the user’s vault and organisations the user is an admin/owner of . This issue has been patched in version 1.35.0.
INFO
Published Date :
March 4, 2026, 10:16 p.m.
Last Modified :
March 6, 2026, 7:45 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update Vaultwarden to version 1.35.0 or later.
- Ensure 2FA is enabled for all accounts.
- Review account activity for unauthorized actions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-27801.
| URL | Resource |
|---|---|
| https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-v6pg-v89r-w8wr | Exploit Mitigation Vendor Advisory |
| https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-v6pg-v89r-w8wr | Exploit Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-27801 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-27801
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-27801 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-27801 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 06, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N Added CPE Configuration OR *cpe:2.3:a:dani-garcia:vaultwarden:*:*:*:*:*:*:*:* versions up to (excluding) 1.35.0 Added Reference Type CISA-ADP: https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-v6pg-v89r-w8wr Types: Exploit, Mitigation, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-v6pg-v89r-w8wr Types: Exploit, Mitigation, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 05, 2026
Action Type Old Value New Value Added Reference https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-v6pg-v89r-w8wr -
New CVE Received by [email protected]
Mar. 04, 2026
Action Type Old Value New Value Added Description Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Vaultwarden versions 1.34.3 and prior are susceptible to a 2FA bypass when performing protected actions. An attacker who gains authenticated access to a user’s account can exploit this bypass to perform protected actions such as accessing the user’s API key or deleting the user’s vault and organisations the user is an admin/owner of . This issue has been patched in version 1.35.0. Added CVSS V4.0 AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-307 Added Reference https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-v6pg-v89r-w8wr