HCL Connections s vulnerable to possible denial of service for certain users

published 2024-02-12 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-31743

cvss: 5.5; 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 24%
public exploits: 0; none known

HCL Connections is vulnerable to a denial of service, caused by improper validation on certain requests. Using a specially-crafted request an attacker could exploit this vulnerability to cause denial of service for affected users.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 21 mo ago (2025-01-13)

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

HCL Software HCL Connections

References

support.hcltechsw.com /csm?id=kb_article&sysparm_article=KB0108430
vendor-advisory

Sources

CVE List CVE-2023-28018
NVD CVE-2023-28018

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Summary