CVE-2018-18308

MEDIUM

BigTree CMS 4.2.23 - Stored Cross-Site Scripting in Image Upload Area

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-18308. PoCs published by Ismail Tasdelen.

AI-analyzed exploit summary This exploit demonstrates a stored XSS vulnerability in BigTree CMS 4.2.23 via the image upload functionality. The payload is embedded in the filename parameter of a multipart/form-data POST request to /admin/ajax/file-browser/upload/.

Description

In the 4.2.23 version of BigTree, a Stored XSS vulnerability has been discovered in /admin/ajax/file-browser/upload/ (aka the image upload area).

Exploits (1)

exploitdb WORKING POC
by Ismail Tasdelen · textwebappsphp
https://www.exploit-db.com/exploits/45628

This exploit demonstrates a stored XSS vulnerability in BigTree CMS 4.2.23 via the image upload functionality. The payload is embedded in the filename parameter of a multipart/form-data POST request to /admin/ajax/file-browser/upload/.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: BigTree CMS 4.2.23
Auth required
Prerequisites: Valid admin session cookies · Access to the admin panel
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/45628/
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://github.com/bigtreecms/BigTree-CMS/issues/356

Scores

CVSS v3 6.1
EPSS 0.0365
EPSS Percentile 88.1%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
bigtreecms/bigtree_cms 4.2.23
Published Oct 16, 2018
Tracked Since Feb 18, 2026