CVE-2021-37598 json
WP Cerber before 8.9.3 allows bypass of /wp-json access control via a trailing ? character.
published 2021-08-19 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-24156
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.4%
- EPSS 2.4% chance of exploitation in 30 days, percentile 83%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
WP Cerber before 8.9.3 allows bypass of /wp-json access control via a trailing ? character.
Patch / fix
- wpcerber wp_cerber 8.9.3
Exploit prediction
2.35% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template WP Cerber < 8.9.3 - Broken Access Control nuclei detection template
- github.com https://github.com/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0024/FEYE-2021-0024.md referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0024/FEYE-2021-0024.md
exploit, third-party-advisory
-
github.com
/fireeye/Vulnerability-Disclosures
third-party-advisory
Sources
- CVE List CVE-2021-37598
- NVD CVE-2021-37598
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