CVE-2026-85680Network attack vectorHinoki check available

Stored XSS via unescaped profile page title

Published Sep 19, 2026 · Updated Sep 19, 2026

Stored XSS in Ultimate Member before 2.13.1 allows remote attackers who register accounts to execute JavaScript in profile visitors' browsers. The profile-title path decodes HTML entities after sanitization and outputs a profile-name-derived value without escaping it. Account registration and a victim viewing the attacker's profile are required; execution occurs in that visitor's session, including an administrator's.

CVSS severity8.8
High
EPSS probability0.51%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored XSS in Ultimate Member before 2.13.1 allows remote attackers who register accounts to execute JavaScript in profile visitors' browsers. The profile-title path decodes HTML entities after sanitization and outputs a profile-name-derived value without escaping it. Account registration and a victim viewing the attacker's profile are required; execution occurs in that visitor's session, including an administrator's.

The record

CVE
CVE-2026-85680
Published
Sep 19, 2026
Updated
Sep 19, 2026
Vendor
Ultimate Member Group Ltd
Product
Ultimate Member
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 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=0 <2.13.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ultimate Member Group Ltd · Ultimate Memberversion=0 <2.13.1

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 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')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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