VULNERABILITY INTELLIGENCE

CVE-2021-27786

CVSS score4.6 MEDIUM
EPSS probability0.59%
CISA KEVNot currently listed
Published2022-06-09
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Description

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.

Weakness classification

  • psirt@hcl.com: CWE-942
  • nvd@nist.gov: CWE-697

Primary references