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CVE-2020-36941

30
FAUCET Score

CVE-2020-36941 is a critical CSV injection vulnerability affecting Knockpy 4.1.1, a subdomain enumeration tool. This flaw allows attackers to inject malicious spreadsheet formulas into CSV reports by manipulating server response headers. Rated 9.8 Critical (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), it can be exploited remotely with low complexity and no user interaction required for the initial injection, potentially leading to high impact on confidentiality, integrity, and availability once a user opens the malicious CSV. Currently, there is no evidence of active exploitation, nor are public exploit modules or significant community discussion available for this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
4.1.1CPE matchmatch criteria
cpe:2.3:a:guelfoweb:knockpy:4.1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

5.3MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
LOW
SS Integrity
LOW
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.49%
Probability of exploitation in next 30 days
EPSS Percentile
39.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 18th percentile among its peer group of 36,833 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

github.com / guelfoweb/knock
Product
exploit-db.com / exploits/49342
ExploitThird Party Advisory
vulncheck.com / advisories/knockpy-csv-injection
Third Party Advisory