CVE-2023-2476Public exploitNetwork attack vector

Authenticated script execution in another user's browser

Published May 2, 2023 · Updated Aug 2, 2024

Cross-site scripting in the J2eeFAST Announcement Handler 2.6.0 and earlier allows remote authenticated users to run script in another user's browser. The public record does not identify the affected function, request parameter, or output sink; it names only the Announcement Handler and menu path. Exploitation requires low-privileged access and a victim to view the affected content, enabling browser-context data access or actions.

CVSS severity5.4
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in the J2eeFAST Announcement Handler 2.6.0 and earlier allows remote authenticated users to run script in another user's browser. The public record does not identify the affected function, request parameter, or output sink; it names only the Announcement Handler and menu path. Exploitation requires low-privileged access and a victim to view the affected content, enabling browser-context data access or actions.

The record

CVE
CVE-2023-2476
Published
May 2, 2023
Updated
Aug 2, 2024
Vendor
J2eeFAST
Product
J2eeFAST
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0
  2. Affected versionversion=2.1
  3. Affected versionversion=2.2
  4. Affected versionversion=2.3
  5. Affected versionversion=2.4
  6. Affected versionversion=2.5
  7. Affected versionversion=2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

J2eeFAST · J2eeFASTversion=2.0; version=2.1; version=2.2; version=2.3; version=2.4; version=2.5; version=2.6

Published CVSS scores

3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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