CVE-2018-25331

Zenar Content Management System Cross-Site Scripting via ajax.php

Medium5.1Public exploitEPSS 0.21%

Published: 17 May 2026
Updated: 24 May 2026
Reserved: 17 May 2026
Assigned by: VulnCheck

Description

Zenar Content Management System contains a cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by manipulating form parameters in POST requests. Attackers can inject script tags through the current_page parameter sent to the ajax.php endpoint, which reflects unsanitized user input in the response HTML to execute arbitrary JavaScript in victim browsers.

Public exploit

A reference of the record is tagged as an exploit or proof of concept: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.

ExploitDB-44664 (opens in a new tab)exploit

Timeline

2026
17 May 2026
17 May 2026
ID reserved
By VulnCheck
17 May 2026
17 May 2026
Published
24 May 20267 days later
24 May 2026· 7 days later
Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2018-25331, by who scored it
Scored by	CVSS	Score	Vector
VulnCheckCNA (assigner)	4.0	Medium5.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
VulnCheckCNA (assigner)	3.1	Medium6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVDNVD · Deferred	4.0	Medium5.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS (exploitation in 30 days): 0.21% · top 88% of all CVEs (8 Nov 2026)
CISA SSVC: Exploitation: poc · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.1.

Weakness

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (opens in a new tab)All about CWE-79 and its CVEs

Affected products

zenar · Zenar Content Management System
- affected 7.0

References (4)

ExploitDB-44664 (opens in a new tab)exploit
Official Product Homepage (opens in a new tab)product
Product Reference (opens in a new tab)product
VulnCheck Advisory: Zenar Content Management System Cross-Site Scripting via ajax.php (opens in a new tab)third-party-advisory

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

[![CVE-2018-25331](https://cveledger.app/badge/CVE-2018-25331.svg)](https://cveledger.app/cve/CVE-2018-25331)

Record last updated 24 May 2026, 01:36 UTC.