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CVE-2021-39327

82
FAUCET Score

CVE-2021-39327 is a sensitive information disclosure vulnerability affecting BulletProof Security WordPress plugin versions up to and including 5.1. It allows attackers to retrieve the full site path and database backup file paths via a publicly accessible log file. Rated Medium severity (CVSS 5.3), this vulnerability is easily exploitable over the network with no user interaction, potentially leading to further compromise. While not on the KEV catalog, exploit code is publicly available through Metasploit, Nuclei, and ExploitDB, indicating a high potential for exploitation despite limited community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.1CPE matchmatch criteria
cpe:2.3:a:ait-pro:bulletproof_security:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
71.69%
Probability of exploitation in next 30 days
EPSS Percentile
99.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: Wordpress BulletProof Security Backup Disclosure · Sep 17, 2021
Nuclei: CVE-2021-39327 · Oct 8, 2021
ExploitDB: EDB-50382 · Oct 6, 2021
This CVE's current EPSS score of 0.7169 is in the 100th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/164420/WordPress-BulletProof-Security-5.1-Information-Disclosure.html
ExploitThird Party AdvisoryVDB Entry
github.com / Hacker5preme/Exploits/tree/main/Wordpress/CVE-2021-39327
ExploitThird Party Advisory
plugins.trac.wordpress.org / changeset
PatchThird Party Advisory
exploit-db.com / exploits/50382
ExploitThird Party AdvisoryVDB Entry
wordfence.com / vulnerability-advisories
Third Party Advisory