HOME VULNERABILITIESCVE-2021-39327

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CVE-2021-39327

CWE-200Published: September 17, 2021· Updated: Jun 17, 2026

5.3

CVSS v3.1

Official Description

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.

Technical Analysis

CVE-2021-39327 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A proof-of-concept (PoC) exploit exists for CVE-2021-39327. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Affected Vendors & Products

ait-pro1 product(s)

bulletproof security

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2591118%40bulletproof-security&new=2591118%40bulletproof-security&sfp_email=&sfph_mail=

PATCHhttps://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2591118%40bulletproof-security&new=2591118%40bulletproof-security&sfp_email=&sfph_mail=

ADVISORYhttp://packetstormsecurity.com/files/164420/WordPress-BulletProof-Security-5.1-Information-Disclosure.html

ADVISORYhttps://github.com/Hacker5preme/Exploits/tree/main/Wordpress/CVE-2021-39327

ADVISORYhttps://www.exploit-db.com/exploits/50382

ADVISORYhttps://www.wordfence.com/vulnerability-advisories/#CVE-2021-39327

ADVISORYhttp://packetstormsecurity.com/files/164420/WordPress-BulletProof-Security-5.1-Information-Disclosure.html

ADVISORYhttps://github.com/Hacker5preme/Exploits/tree/main/Wordpress/CVE-2021-39327

ADVISORYhttps://www.exploit-db.com/exploits/50382

ADVISORYhttps://www.wordfence.com/vulnerability-advisories/#CVE-2021-39327

All References (10)

→

http://packetstormsecurity.com/files/164420/WordPress-BulletProof-Security-5.1-Information-Disclosure.htmlExploit · Third Party Advisory · VDB Entry

→

https://github.com/Hacker5preme/Exploits/tree/main/Wordpress/CVE-2021-39327Exploit · Third Party Advisory

→

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2591118%40bulletproof-security&new=2591118%40bulletproof-security&sfp_email=&sfph_mail=Patch · Third Party Advisory

→

https://www.exploit-db.com/exploits/50382Exploit · Third Party Advisory · VDB Entry

→

https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39327Third Party Advisory

→

http://packetstormsecurity.com/files/164420/WordPress-BulletProof-Security-5.1-Information-Disclosure.htmlExploit · Third Party Advisory · VDB Entry

→

https://github.com/Hacker5preme/Exploits/tree/main/Wordpress/CVE-2021-39327Exploit · Third Party Advisory

→

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2591118%40bulletproof-security&new=2591118%40bulletproof-security&sfp_email=&sfph_mail=Patch · Third Party Advisory

→

https://www.exploit-db.com/exploits/50382Exploit · Third Party Advisory · VDB Entry

→

https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39327Third Party Advisory

Quick Facts

CVE IDCVE-2021-39327

CVSS Score5.3 / 10

SeverityMEDIUM

WeaknessCWE-200

CISA KEVNo

ExploitPOC

Affected1 vendor(s)

PublishedSep 17, 2021

Related CVEs (CWE-200)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2021-39327 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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