CVE-2025-63441Network attack vector

Administrator session compromise via reflected parameter-name injection

Published Nov 3, 2025 · Updated Nov 3, 2025

Reflected XSS in Open Source Social Network 8.6 allows remote authenticated users to run scripts in an administrator's browser. The u/administrator/friends endpoint inserts the name of an arbitrarily supplied URL parameter into its response without neutralizing script content. Exploitation requires a low-privileged remote user to induce an administrator to open the crafted URL, enabling actions with that administrator's session but no service interruption.

CVSS severity7.3
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Open Source Social Network 8.6 allows remote authenticated users to run scripts in an administrator's browser. The u/administrator/friends endpoint inserts the name of an arbitrarily supplied URL parameter into its response without neutralizing script content. Exploitation requires a low-privileged remote user to induce an administrator to open the crafted URL, enabling actions with that administrator's session but no service interruption.

The record

CVE
CVE-2025-63441
Published
Nov 3, 2025
Updated
Nov 3, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
7.3NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/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 exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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