CVE-2025-13861Network attack vectorHinoki check available

Unauthenticated stored XSS via unescaped upload metadata

Published Dec 17, 2025 · Updated Dec 17, 2025

Stored XSS in Link Software LLC HTML Forms 1.6.0 and earlier allows remote attackers to execute scripts in an administrator's browser. Submission display paths in src/functions.php render attacker-controlled file-upload metadata without sufficient HTML neutralization. Exploitation requires an administrator to open the form submissions page, where the script runs within the logged-in WordPress origin.

CVSS severity6.1
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored XSS in Link Software LLC HTML Forms 1.6.0 and earlier allows remote attackers to execute scripts in an administrator's browser. Submission display paths in src/functions.php render attacker-controlled file-upload metadata without sufficient HTML neutralization. Exploitation requires an administrator to open the form submissions page, where the script runs within the logged-in WordPress origin.

The record

CVE
CVE-2025-13861
Published
Dec 17, 2025
Updated
Dec 17, 2025
Vendor
Link Software LLC
Product
HTML Forms
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 17, 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?

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

  1. Affected versionversion=* <=1.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Link Software LLC · HTML Formsversion=* <=1.6.0

Published CVSS scores

6.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

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
Privilegesunauthenticated
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.

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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