CVE-2021-27786 is a critical Cross-Origin Resource Sharing (CORS) vulnerability affecting HCLTech OneTest Server. It allows an unauthenticated attacker to potentially perform privileged actions and access sensitive information by exploiting misconfigured CORS settings where Access-Control-Allow-Credentials is enabled. With a CVSS score of 9.8 (CRITICAL), this vulnerability has a low attack complexity and can lead to complete compromise of confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed on the CISA KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
10.0CPE matchmatch criteria | cpe:2.3:a:hcltech:onetest_server:10.0:*:*:*:*:*:*:* | ||
10.1CPE matchmatch criteria | cpe:2.3:a:hcltech:onetest_server:10.1:*:*:*:*:*:*:* | ||
10.2CPE matchmatch criteria | cpe:2.3:a:hcltech:onetest_server:10.2:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.