CVE-2018-20520

MEDIUM

MiniCMS V1.10 has XSS via the mc-admin/post-edit.php query string, a related issue to CVE-2018-10296 and CVE-2018-16233.

Affects 1 product across 1 vendor.

CVSS 3.06.1
EPSS0.9%
Percentile58th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, requires user interaction, can impact systems beyond the vulnerable component, no availability impact.
CWE Weakness Definitions
CWE-79: Cross-Site Scripting (XSS)

Attacker injects malicious scripts into web pages viewed by other users, executing in the victim's browser context.

Related Attack Patterns (CAPEC)
CAPEC-85 AJAX Footprinting
via CWE-79
CAPEC-209 XSS Using MIME Type Mismatch
via CWE-79
CAPEC-588 DOM-Based XSS
via CWE-79
CAPEC-591 Reflected XSS
via CWE-79
CAPEC-592 Stored XSS
via CWE-79
Show all 6
via CWE-79

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

This vulnerability was disclosed in 2018. A medium severity vulnerability affects 1234N systems (CVE-2018-20520). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2018-GLOBAL-215343-M • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2018-20520?
This vulnerability was disclosed in 2018. A medium severity vulnerability affects 1234N systems (CVE-2018-20520). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2018-20520?
CVE-2018-20520 has CVSS 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS: 0.9%.
Is CVE-2018-20520 actively exploited?
No confirmed active exploitation of CVE-2018-20520 as of 2026-05-30.
How do I remediate CVE-2018-20520?
Priority: MONITOR.
What systems are affected by CVE-2018-20520?
CVE-2018-20520 affects 1234N Minicms.
Vulnerability Details
CVE IDCVE-2018-20520
BSIDBS-2018-GLOBAL-215343-M BreachSpider Global ID
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Published2018-12-27
Last Modified2024-11-21
ICS Relevance0%
Weakness (CWE)
Cross-Site Scripting (XSS)
SourceNVD
Official Description

MiniCMS V1.10 has XSS via the mc-admin/post-edit.php query string, a related issue to CVE-2018-10296 and CVE-2018-16233.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: MiniCMS V1.10 has XSS via the mc-admin/post-edit.php query string, a related issue to CVE-2018-10296 and CVE-2018-16233. CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Exploitation Likelihood: MINIMAL

Affected Products
VendorProductAffected Versions
1234N Minicms 1.10
Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 2849 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash5c1ff2de1cf9fc70cf04349d653963a0fd0fb5aa87ace131ac4d32a0990b9c0580a698b77f46679dfebed79cc0f9a048c82bb2dd069e99d4f17f05b71115e4ff
Related CVEs affecting 1234N
CVE-2025-15457 9.8 A vulnerability was found in bg5sbk MiniCMS up to 1.8. The impacted element i... CVE-2020-19896 9.8 File inclusion vulnerability in Minicms v1.9 allows remote attackers to execu... CVE-2020-36052 9.8 Directory traversal vulnerability in post-edit.php in MiniCMS V1.10 allows re... CVE-2018-18892 9.8 MiniCMS 1.10 allows execution of arbitrary PHP code via the install.php siten... CVE-2025-15458 9.8 A vulnerability was determined in bg5sbk MiniCMS up to 1.8. This affects an u...
View all 1234N CVEs →

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