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CVE-2021-20720

31
FAUCET Score

CVE-2021-20720 is a critical SQL injection vulnerability affecting KonaWiki2 versions prior to 2.2.4. This flaw allows unauthenticated remote attackers to execute arbitrary SQL commands, leading to complete compromise of database confidentiality, integrity, and availability. Despite its critical CVSS score of 9.8 and high FAUCET Risk Score of 93/100, there is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), and it is not listed in CISA's KEV catalog. However, the vulnerability has garnered significant community discussion with 10 mentions, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.2.4CPE matchmatch criteria
cpe:2.3:a:kujirahand:konawiki:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.32%
Probability of exploitation in next 30 days
EPSS Percentile
67.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0132 is in the 54th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jvn.jp / en/jp/JVN34232719/index.html
Third Party Advisory
kujirahand.com / konawiki
Vendor Advisory