TI-2020-13867 Aliases CVE-2020-20502 GHSA-cxw7-q566-ccx6

Cross Site Request Forgery found in yzCMS v.2.0 allows a remote attacker to execute…

LOW 29CWE-352Published 2023-06-20 · Updated 2024-12-10

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Tampering
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-352.

Summary

Cross Site Request Forgery found in yzCMS v.2.0 allows a remote attacker to execute arbitrary code via the token check function.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00465 40th 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

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

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:2.0:::::::*	2.0	Vulnerable	Yzmcms

cpe:2.3:a:yzmcms:yzmcms:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Yzmcms

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-20502
2026-10-03 Alias added: GHSA-cxw7-q566-ccx6

References

Exploit 1

https://github.com/yzmcms/yzmcms/issues/27

Other 1

http://www.yzmcms.com/

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