What is CVE-2020-21126?

CVE-2020-21126 is a high-severity vulnerability in Metinfo, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-09-15.

How severe is CVE-2020-21126?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2020-21126 known to be exploited?

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

CSRF in Metinfo

CVE-2020-21126

MetInfo 7.0.0 contains a Cross-Site Request Forgery (CSRF) via admin/?n=admin&c=index&a=doSaveInfo.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2021-09-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (48.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Metinfo — versions 7.0.0

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

Public proof-of-concept exploits

References

github.com/Echox1/metinfo_csrf/issues/1 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-21126?: CVE-2020-21126 is a high-severity vulnerability in Metinfo, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-09-15.
How severe is CVE-2020-21126?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2020-21126 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.