A cross-site scripting (XSS) vulnerability in Monstra CMS v3.0.4 allows attackers to execute arbitrary web scripts or HTML via a crafted pa…

published 2024-06-06 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-36209

cvss: 4.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits: 0; none known

A cross-site scripting (XSS) vulnerability in Monstra CMS v3.0.4 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the About Me parameter in the Edit Profile page.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-08-22)

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/OoLs5/VulDiscovery/blob/main/monstra_xss.pdf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.7	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CNA	3.1	4.7	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Affected products

monstra monstra_cms

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /OoLs5/VulDiscovery/blob/main/monstra_xss.pdf
exploit

Sources

CVE List CVE-2024-36775
NVD CVE-2024-36775

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