AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2021-27290

HIGH · CVSS 7.5 EPSS 4.72% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-03-12 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. Public exploit code or proof-of-concept references have been detected in its references. It may lead to a denial-of-service condition.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-27290
Severity
HIGH
CVSS
7.5
EPSS
4.72%

Original NVD Description

ssri 5.2.2-8.0.0, fixed in 8.0.1, processes SRIs using a regular expression which is vulnerable to a denial of service. Malicious SRIs could take an extremely long time to process, leading to denial of service. This issue only affects consumers using the strict option.

Related CVEs

Other vulnerabilities affecting the same vendor(s)