TI-2020-13987 Aliases CVE-2020-21082 GHSA-r5j4-m35f-mj7g

A cross-site scripting (XSS) vulnerability in the background administrator article…

LOW 28CWE-79Published 2021-09-14 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
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

A cross-site scripting (XSS) vulnerability in the background administrator article management module of Maccms 8.0 allows attackers to steal administrator and user cookies via crafted payloads in the text fields for Chinese and English names.

Why it matters now

EPSS 0.00662 51st 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:maccms:maccms:8.0:::::::*	8.0	Vulnerable	Maccms

cpe:2.3:a:maccms:maccms:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Maccms

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-21082
2026-10-03 Alias added: GHSA-r5j4-m35f-mj7g
2026-10-06 EPSS moved to the 50th–90th percentile

References

Exploit 1

https://github.com/magicblack/maccms8/issues/2

TI-2025-20709 maccms10 v2025.1000.4047 has a Server-Side Request Forgery (SSRF) vulnerability via Add Article. CVSS 3.1CRITICAL 9.1
TI-2025-20708 maccms10 v2025.1000.4047 is vulnerable to Server-Side Request Forgery (SSRF) in the Collection Custom Interface feature. CVSS 3.1CRITICAL 9.1
TI-2025-20707 maccms10 v2025.1000.4047 is vulnerable to Server-Side Request Forgery (SSRF) via the Scheduled Task function. CVSS 3.1CRITICAL 9.1
TI-2025-28783 maccms10 v2025.1000.4047 is vulnerable to Server-side request forgery (SSRF) in Email Settings. CVSS 3.1HIGH 7.3
TI-2017-12978 Maccms 8.x allows remote command execution via the wd parameter in an index.php?m=vod-search request. CVSS 3.0CRITICAL 9.8
TI-2024-21313 Cross Site Scripting vulnerability in MacCMS v.10 v.2024.1000.3000 allows a remote… CVSS 3.1HIGH 7.3

See all 36 →

Sources

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