What is CVE-2021-27130?

CVE-2021-27130 is a critical-severity vulnerability in Janobe Online Reviewer System, classified under SQL Injection. CVSS score: 9.8/10. Published 2021-04-14.

How severe is CVE-2021-27130?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-27130 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SQL Injection in Janobe Online Reviewer System

CVE-2021-27130

Online Reviewer System 1.0 contains a SQL injection vulnerability through authentication bypass, which may lead to a reverse shell upload.

Vulnerability class: SQL Injection

Published 2021-04-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.022 (81.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: -0.000

Affected products

Janobe Online Reviewer System — versions 1.0

Weakness classification (CWE)

CWE-89 — SQL Injection

Public proof-of-concept exploits

AssassinUKG/AssassinUKG

References

packetstormsecurity.com/files/161219/Online-Reviewer-System-1.0-SQL-Injection-S… (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2021-27130?: CVE-2021-27130 is a critical-severity vulnerability in Janobe Online Reviewer System, classified under SQL Injection. CVSS score: 9.8/10. Published 2021-04-14.
How severe is CVE-2021-27130?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-27130 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.