CVE-2025-13617Network attack vector

Stored XSS via unescaped alternate-link metadata

Published Feb 19, 2026 · Updated Feb 19, 2026

Stored XSS in Apollo13 Framework Extensions 1.9.8 and earlier allows remote authenticated users to inject scripts through a13_alt_link. The alternate-link metadata path in features/permalinks.php stores the parameter and renders it without sufficient sanitization or output escaping. Contributor-level access is required; the injected script runs in a visitor's browser whenever the affected content is viewed.

CVSS severity6.4
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Apollo13 Framework Extensions 1.9.8 and earlier allows remote authenticated users to inject scripts through a13_alt_link. The alternate-link metadata path in features/permalinks.php stores the parameter and renders it without sufficient sanitization or output escaping. Contributor-level access is required; the injected script runs in a visitor's browser whenever the affected content is viewed.

The record

CVE
CVE-2025-13617
Published
Feb 19, 2026
Updated
Feb 19, 2026
Vendor
Apollo13 Themes
Product
Apollo13 Framework Extensions
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 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?

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

  1. Affected versionversion=* <=1.9.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Apollo13 Themes · Apollo13 Framework Extensionsversion=* <=1.9.8

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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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