Auth bypass in Cryptpad
CVE-2025-49591
CryptPad is a collaboration suite. Prior to version 2025.3.0, enforcement of Two-Factor Authentication (2FA) in CryptPad can be trivially bypassed, due to weak implementation of access controls. An attacker that compromises a user's credentials can gain access to the victim's account, even if the victim has 2FA set up. This is due to 2FA not being enforced if the path parameter is not 44 characters long, which can be bypassed by simply URL encoding a single character in the path. This issue has been patched in version 2025.3.0.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (41.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Cryptpad — versions < 2025.3.0
- Xwiki Cryptpad
Weakness classification (CWE)
References
- github.com/cryptpad/cryptpad/security/advisories/GHSA-xq5x-wgcm-3p33 (Exploit, Vendor Advisory)
- github.com/cryptpad/cryptpad/commit/0c5d4bbf5e5206d53470ea86a664fa2b703fb611 (Patch)
- github.com/cryptpad/cryptpad/commit/f624f9d457d36040f57c7598d98a8b9461b79837 (Patch)
- github.com/cryptpad/cryptpad/blob/15c81aa8ccb737a9a1167481f4a699af331364bb/lib/… (Product)
Frequently asked questions
- What is CVE-2025-49591?
- CVE-2025-49591 is a critical-severity vulnerability in Cryptpad, classified under Improper Access Control. CVSS score: 9.1/10. Published 2025-06-18.
- How severe is CVE-2025-49591?
- Critical severity. CVSS v3 base score is 9.1 out of 10.