cve.bz

CVE-2021-27786

9.8 criticalEPSS 0.6%

Critical (9.8) in hcltech onetest server. EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.6% chance of exploitation in the next 30 days; higher than 48% of CVEs (scores of 2026-10-31)
CWEs
CWE-697, CWE-942
Published
Modified
Record from
the NVD, synced

Affected

References

Check your stackJSON