CVE-2026-15066Network attack vector

Stored XSS via linked editor notes

Published Aug 16, 2026 · Updated Aug 16, 2026

Stored XSS in Loco Translate for WordPress before 2.8.8 allows remote authenticated users to execute script via extracted PO comments. Extracted comments from PO data are surfaced to translators as editor notes, and affected releases render those note and error fields with clickable content instead of neutralizing hostile markup before it reaches the admin page. Translator-level access or higher is required to place the payload in a translation workflow, after which any user who opens the poisoned editor view can trigger script execution in the WordPress admin origin.

CVSS severity6.4
Medium
EPSS probability0.25%
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 Loco Translate for WordPress before 2.8.8 allows remote authenticated users to execute script via extracted PO comments. Extracted comments from PO data are surfaced to translators as editor notes, and affected releases render those note and error fields with clickable content instead of neutralizing hostile markup before it reaches the admin page. Translator-level access or higher is required to place the payload in a translation workflow, after which any user who opens the poisoned editor view can trigger script execution in the WordPress admin origin.

The record

CVE
CVE-2026-15066
Published
Aug 16, 2026
Updated
Aug 16, 2026
Vendor
Tim Whitlock
Product
Loco Translate
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 16, 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 <=2.8.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Tim Whitlock · Loco Translateversion=0 <=2.8.7

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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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/JScript

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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