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CVE-2020-21174

30
FAUCET Score

CVE-2020-21174 describes a critical file upload vulnerability in liufee CMS v.2.0.7.1, specifically affecting feehi and feehicms products. This flaw allows an unauthenticated remote attacker to execute arbitrary code by manipulating the image suffix function. With a CVSS score of 9.8 (CRITICAL), the vulnerability has a low attack complexity and no user interaction required, enabling full compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation in the wild (not in KEV), the vulnerability has garnered significant community discussion with 10 mentions, and exploit code is available on GitHub.

Impacted Technologies

VendorProductVersion(s)CPE
2.0.7.1CPE matchmatch criteria
cpe:2.3:a:feehi:feehicms:2.0.7.1:*:*:*:*:*:*:*

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
1.31%
Probability of exploitation in next 30 days
EPSS Percentile
67.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0131 is in the 54th percentile among its peer group of 36,835 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

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: feehi/cmsFixed in: 2.0.8.1
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-q3q5-qvh5-cmw5critical

liufee CMS File Upload vulnerability

Jun 20, 2023

References

github.com / liufee/cms/issues/44
ExploitIssue TrackingPatch