Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-28420

27
FAUCET Score

CVE-2021-28420 describes a reflected cross-site scripting (XSS) vulnerability in Seo Panel version 4.8.0, specifically impacting the "from_time" parameter within alerts.php. This medium-severity vulnerability (CVSS 4.8) allows an attacker to inject malicious JavaScript, potentially leading to client-side compromise, requiring high privileges and user interaction. While there is no evidence of active exploitation or Metasploit/Nuclei modules, an ExploitDB proof-of-concept (EDB-49935) exists, and the vulnerability has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.8.0CPE matchmatch criteria
cpe:2.3:a:seopanel:seo_panel:4.8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.8MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.7
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.93%
Probability of exploitation in next 30 days
EPSS Percentile
77.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-49935 · Jun 3, 2021
This CVE's current EPSS score of 0.0193 is in the 97th percentile among its peer group of 4,937 CVEs.

Social Chatter

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

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

packetstormsecurity.com / files/162914/Seo-Panel-4.8.0-Cross-Site-Scripting.html
ExploitThird Party AdvisoryVDB Entry
github.com / seopanel/Seo-Panel/issues/206
ExploitIssue TrackingPatchThird Party Advisory