OpenCMS Cross-Site Scripting vulnerability

published 2025-04-21 18 mo ago modified 2026-06-17 4 mo ago also GHSA-h75c-f2xx-9vxv , EUVD-2025-12369

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits: 0; none known

Cross Site Scripting vulnerability in Create/Modify article function in Alkacon OpenCMS 17.0 allows remote attacker to inject javascript payload via image title sub-field in the image field

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 18 mo ago (2025-04-21)

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/Sidd545-cr/CVE/blob/main/CVE-2024-42699%20-%20Stored%20XSS%20in%20image%20title.pdf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.5	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

Affected packages

ecosystem	package	affected	fixed in
maven	org.opencms:opencms-core	<=17.0	no fix listed

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /Sidd545-cr/CVE/blob/main/CVE-2024-42699%20-%20Stored%20XSS%20in%20image%20title.pdf
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2024-42699
advisory
github.com /alkacon/opencms-core
package

Sources

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