CVE-2026-96840Network attack vector

Stored XSS via unescaped display-name attribute

Published Oct 10, 2026 · Updated Oct 10, 2026

Stored XSS in WPXPO PostX 5.1.0 and earlier allows remote authenticated users to execute scripts via crafted display names. Archive_Title.php:144 inserts display_name into a quoted alt attribute without escaping double quotes that survive WordPress's pre_user_display_name filter. The documented write path requires Subscriber access to /wp-admin/profile.php and a visit to an affected page; Wordfence labels the flaw unauthenticated but does not describe an unauthenticated write path.

CVSS severity7.2
High
EPSS probability0.24%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in WPXPO PostX 5.1.0 and earlier allows remote authenticated users to execute scripts via crafted display names. Archive_Title.php:144 inserts display_name into a quoted alt attribute without escaping double quotes that survive WordPress's pre_user_display_name filter. The documented write path requires Subscriber access to /wp-admin/profile.php and a visit to an affected page; Wordfence labels the flaw unauthenticated but does not describe an unauthenticated write path.

The record

CVE
CVE-2026-96840
Published
Oct 10, 2026
Updated
Oct 10, 2026
Vendor
WPXPO
Product
PostX
Classifications
T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 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 <=5.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WPXPO · PostXversion=0 <=5.1.0

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059.007JavaScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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