CVE-2025-55422Public exploitNetwork attack vector

Reflected XSS via plus endpoint input

Published Aug 27, 2025 · Updated Jul 5, 2026

Reflected XSS in FoxCMS 1.2.6 allows remote attackers to execute script in a victim's browser through /index.php/plus. Public records identify the endpoint but do not disclose which request parameter is reflected or the output encoding operation that fails. Exploitation requires a victim to follow a crafted request; injected script runs in the FoxCMS origin with that browser session's access.

CVSS severity8.8
High
EPSS probability0.41%
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 FoxCMS 1.2.6 allows remote attackers to execute script in a victim's browser through /index.php/plus. Public records identify the endpoint but do not disclose which request parameter is reflected or the output encoding operation that fails. Exploitation requires a victim to follow a crafted request; injected script runs in the FoxCMS origin with that browser session's access.

The record

CVE
CVE-2025-55422
Published
Aug 27, 2025
Updated
Jul 5, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 2026Record 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

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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