CVE•Published 2021-04-14•Modified 2026-04-14•1 article on news•6 live references•NVD data
CVE-2021-27130Janobe · Online_reviewer_system
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
68
Exploit Prediction Scoring System · top 32% of all CVEs
Weaknesses (CWE)
Description
Online Reviewer System 1.0 contains a SQL injection vulnerability through authentication bypass, which may lead to a reverse shell upload.
Timeline
Published 2021-04-14
Modified 2026-04-14
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2021-27130Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Janobe Online Reviewer System" version:"1.0"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"Online Reviewer System"HTTP body or banner mentions "Online Reviewer System" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2021-27130Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2021-27130Censys host search filtered to this CVE id.
grep.app
CVE-2021-27130Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2021-27130GitHub code search for direct mentions.
Google dork
"CVE-2021-27130" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.