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CVE-2021-30111

18
FAUCET Score

CVE-2021-30111 describes a stored Cross-Site Scripting (XSS) vulnerability in Web-School ERP version 5.0, specifically within the event name and description fields of the "Add Events" functionality. An attacker can inject malicious JavaScript code that, once stored, will execute in the browser of any user viewing the affected event, potentially leading to session hijacking or data theft. This vulnerability has a CVSS score of 5.4 (Medium), indicating a low attack complexity and requiring user interaction, but with the potential for low impact on confidentiality and integrity. The attack vector is network-based, and successful exploitation could compromise user sessions. Currently, there is no evidence of active exploitation, and no public exploit code is available on platforms like Metasploit or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting it has not garnered significant attention.

Impacted Technologies

VendorProductVersion(s)CPE
5.0CPE matchmatch criteria
cpe:2.3:a:web-school:enterprise_resource_planning:5.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.73%
Probability of exploitation in next 30 days
EPSS Percentile
50.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0073 is in the 85th percentile among its peer group of 15,225 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

Remediation records are not available for this CVE.

References

github.com / 0xrayan/CVEs/issues/4
ExploitIssue TrackingThird Party Advisory
web-school.in / try-demo
Product
web-school.in
Product