AppCMS 2.0.101 has a XSS injection vulnerability in \templates\m\inc_head.php

published 2022-01-23 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32153

cvss: 6.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.5%; EPSS 2.5% chance of exploitation in 30 days, percentile 84%
public exploits: 0; none known, plus a Nuclei check

Exploit prediction

2.52% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Nuclei template AppCMS - Cross-Site Scripting nuclei detection template
github.com https://github.com/source-trace/appcms/issues/8 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /source-trace/appcms/issues/8
exploit, issue-tracking, third-party-advisory

Sources

CVE List CVE-2021-45380
NVD CVE-2021-45380

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary