TI-2020-14550 Aliases CVE-2020-23370 GHSA-cmgq-fmcq-h3xj

In YzmCMS 5.6, stored XSS exists via the…

LOW 26CWE-79Published 2021-05-10 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

In YzmCMS 5.6, stored XSS exists via the common/static/plugin/ueditor/1.4.3.3/php/controller.php action parameter, which allows remote attackers to upload a swf file. The swf file can be injected with arbitrary web script or HTML.

Why it matters now

EPSS 0.00735 54th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:yzmcms:yzmcms:5.6:::::::*	5.6	Vulnerable	Yzmcms

cpe:2.3:a:yzmcms:yzmcms:5.6:*:*:*:*:*:*:* Versions 5.6 Vulnerable ·Yzmcms

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-23370
2026-10-03 Alias added: GHSA-cmgq-fmcq-h3xj

References

Exploit 1

https://github.com/yzmcms/yzmcms/issues/45

TI-2020-14616 Cross Site Request Forgery (CSRF) vulnerability in yzmcms version 5.6, allows remote… CVSS 3.1HIGH 8.8
TI-2024-18965 Cross Site Scripting (XSS) vulnerability in YzmCMS 7.0 allows attackers to run arbitrary… CVSS 3.1HIGH 7.1
TI-2026-23401 A reflected cross-site scripting (XSS) vulnerability in the /index/login.html component… CVSS 3.1MEDIUM 6.1
TI-2024-26201 A cross-site scripting (XSS) vulnerability in the Publish Article function of yzmcms v7.1… CVSS 3.1MEDIUM 6.1
TI-2024-23204 A reflected XSS vulnerability has been found in YzmCMS 7.1. CVSS 3.1MEDIUM 5.5
TI-2025-02981 YzmCMS message.tpl cross site scripting CVSS 4.0MEDIUM 5.3

See all 46 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences