CVE-2021-37597 json
WP Cerber before 8.9.3 allows MFA bypass via wordpress_logged_in_[hash] manipulation.
published 2021-08-19 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-24155
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.1%
- EPSS 2.1% chance of exploitation in 30 days, percentile 82%
- public exploits
- 0
- none known
Summary
WP Cerber before 8.9.3 allows MFA bypass via wordpress_logged_in_[hash] manipulation.
Patch / fix
- wpcerber wp_cerber 8.9.3
Exploit prediction
2.12% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0023/FEYE-2021-0023.md referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
github.com
/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0023/FEYE-2021-0023.md
exploit, third-party-advisory
-
github.com
/fireeye/Vulnerability-Disclosures
third-party-advisory
Sources
- CVE List CVE-2021-37597
- NVD CVE-2021-37597
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.