CVE-2025-3387Public exploitNetwork attack vector

Authenticated cross-site scripting via undisclosed JSON handling

Published Apr 7, 2025 · Updated Apr 8, 2025

Cross-site scripting in renren-security 5.0 through 5.4 allows remote authenticated users to alter rendered page content. The public record identifies the JSON Handler but does not disclose the input field, endpoint, persistence behavior, or unsafe rendering operation. Low-privileged access and passive interaction by another user are required; the published impact is limited to page-content integrity.

CVSS severity5.1
Medium
EPSS probability0.33%
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 renren-security 5.0 through 5.4 allows remote authenticated users to alter rendered page content. The public record identifies the JSON Handler but does not disclose the input field, endpoint, persistence behavior, or unsafe rendering operation. Low-privileged access and passive interaction by another user are required; the published impact is limited to page-content integrity.

The record

CVE
CVE-2025-3387
Published
Apr 7, 2025
Updated
Apr 8, 2025
Vendor
Renren Open Source
Product
renren-security
Classifications
CWE-94, CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2025Record 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=5.0
  2. Affected versionversion=5.1
  3. Affected versionversion=5.2
  4. Affected versionversion=5.3
  5. Affected versionversion=5.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Renren Open Source · renren-securityversion=5.0; version=5.1; version=5.2; version=5.3; version=5.4

Published CVSS scores

4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N
5.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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