HCL OneTest Server is vulnerable to Cross Origin Resource Sharing: Arbitrary Origin Trusted

published 2022-06-07 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14527

cvss: 4.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits: 0; none known

Cross-origin resource sharing (CORS) enables browsers to perform cross domain requests in a controlled manner. This request has an Origin header that identifies the domain that is making the initial request and defines the protocol between a browser and server to see if the request is allowed. An attacker can take advantage of this and possibly carry out privileged actions and access sensitive information when the Access-Control-Allow-Credentials is enabled.

Exploit prediction

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.6	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

HCL Software HCL OneTest Server

Classification

Weakness

CWE-942 Permissive Cross-domain Security Policy with Untrusted Domains
CWE-697 Incorrect Comparison

References

support.hcltechsw.com /csm?id=kb_article&sysparm_article=KB0098603
vendor-advisory

Sources

CVE List CVE-2021-27786
NVD CVE-2021-27786

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