Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2015-8351

56
FAUCET Score

CVE-2015-8351 is a critical remote file inclusion vulnerability affecting the Gwolle Guestbook plugin for WordPress, specifically versions prior to 1.5.4. This flaw allows remote authenticated users to execute arbitrary PHP code by manipulating the 'abspath' parameter in 'frontend/captcha/ajaxresponse.php', particularly when 'allow_url_include' is enabled. The vulnerability carries a CVSS v3 score of 9.0 (CRITICAL) due to its network-based attack vector, high impact on confidentiality, integrity, and availability, and low attack complexity. While not listed in CISA's KEV catalog, an exploit is publicly available on ExploitDB, though there is no evidence of widespread active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5.3CPE matchmatch criteria
cpe:2.3:a:gwolle_guestbook_project:gwolle_guestbook:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.0

9.0CRITICAL

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
37.03%
Probability of exploitation in next 30 days
EPSS Percentile
98.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-38861 · Dec 3, 2015
This CVE's current EPSS score of 0.3703 is in the 97th percentile among its peer group of 201 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.4 Reddit, 1.2 Bluesky, 0.9 Mastodon, and 2.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.8 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/134599/WordPress-Gwolle-Guestbook-1.5.3-Remote-File-Inclusion.html
Third Party AdvisoryVDB Entry
wordpress.org / plugins/gwolle-gb/changelog
Third Party Advisory
exploit-db.com / exploits/38861
Third Party AdvisoryVDB Entry
htbridge.com / advisory/HTB23275
Third Party Advisory
securityfocus.com / archive/1/537020/100/0/threaded