CVE-2021-39327 json
BulletProof Security <= 5.1 Sensitive Information Disclosure
published 2021-09-17 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-25688
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 71.7%
- EPSS 71.7% chance of exploitation in 30 days, percentile 99.4%
- public exploits
- 2
- Metasploit, Exploit-DB, plus a Nuclei check
Summary
The BulletProof Security WordPress plugin is vulnerable to sensitive information disclosure due to a file path disclosure in the publicly accessible ~/db_backup_log.txt file which grants attackers the full path of the site, in addition to the path of database backup files. This affects versions up to, and including, 5.1.
Patch / fix
Timeline
- First public exploit (Metasploit auxiliary/scanner/http/wp_bulletproofsecurity_backups)
- Published
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 19 mo ago
Exploit prediction
71.69% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit auxiliary/scanner/http/wp_bulletproofsecurity_backups Wordpress BulletProof Security Backup Disclosure metasploit auxiliary, normal rank, 2021-09-17
- EDB-50382 Wordpress Plugin BulletProof Security 5.1 - Sensitive Information Disclosure webapps, 2021-10-06
- Nuclei template WordPress BulletProof Security 5.1 Information Disclosure nuclei detection template
- packetstormsecurity.com http://packetstormsecurity.com/files/164420/WordPress-BulletProof-Security-5.1-Information-Disclosure.html referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/Hacker5preme/Exploits/tree/main/Wordpress/CVE-2021-39327 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| 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 |
Affected products
- AITpro BulletProof Security
Classification
- Weakness
- Technology feeds
References
-
plugins.trac.wordpress.org
/changeset?sfp_email=&sfph_mail=&reponame=&old=2591118%40bulletproof-security&new=2591118%40bulletproof-securi
patch, third-party-advisory
-
packetstormsecurity.com
/files/164420/WordPress-BulletProof-Security-5.1-Information-Disclosure.html
exploit, third-party-advisory, vdb-entry
-
github.com
/Hacker5preme/Exploits/tree/main/Wordpress/CVE-2021-39327
exploit, third-party-advisory
-
exploit-db.com
/exploits/50382
exploit, third-party-advisory, vdb-entry
-
wordfence.com
/vulnerability-advisories/#CVE-2021-39327
third-party-advisory
Sources
- CVE List CVE-2021-39327
- NVD CVE-2021-39327
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.