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CVE-2021-39501

32
FAUCET Score

CVE-2021-39501 describes an Open Redirect vulnerability in EyouCMS version 1.5.4, allowing an attacker to redirect users to malicious URLs through the logout function. This vulnerability has a CVSS score of 6.1 (Medium), indicating a low attack complexity and requiring user interaction, with potential impacts on confidentiality and integrity. While there is no evidence of active exploitation or Metasploit modules, Nuclei templates exist, and the vulnerability has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.5.4CPE matchmatch criteria
cpe:2.3:a:eyoucms:eyoucms:1.5.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.59%
Probability of exploitation in next 30 days
EPSS Percentile
88.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-39501 · Jan 8, 2022
This CVE's current EPSS score of 0.0359 is in the 95th percentile among its peer group of 26,221 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / eyoucms/eyoucms/issues/17
ExploitThird Party Advisory
github.com / KietNA-HPT/CVE
Third Party Advisory