AUGUST 4, 2026
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Case File

CVE-2021-27786

MEDIUM · CVSS 4.6 EPSS 0.55%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-06-09 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.6. See the original NVD description below for full technical details.

CVE
CVE-2021-27786
Severity
MEDIUM
CVSS
4.6
EPSS
0.55%

Original NVD 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.

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