Skip to content
Fencer Vulns
critical 9.8

CVE-2020-21662 json

SQL injection vulnerability in yunyecms 2.0.2 allows remote attackers to run arbitrary SQL commands via XFF.

published 2023-07-31 3 y ago modified 2026-06-17 4 mo ago also EUVD-2020-14430

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

SQL injection vulnerability in yunyecms 2.0.2 allows remote attackers to run arbitrary SQL commands via XFF.

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness
  • CWE-89 Improper Neutralization of Special Elements used in an SQL Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.