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CVE-2026-100175 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

The Postie plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Email Body URL Autolink in all versions up to, and including, 1.9.87 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is possible because the ?postie=get-mail endpoint is reachable by unauthenticated users with no capability check, and the email processing path removes WordPress's kses output filters before saving raw markup, allowing the unescaped href attribute value to be stored as post content.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/lib/autolink.php#L129	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/lib/autolink.php#L136	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/lib/autolink.php#L220	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/postie-filters.php#L475	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/postie-message.php#L1311	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/postie-message.php#L607	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/browser/postie/tags/1.9.87/postie.php#L241	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/changeset/3751269	[email protected]	Source CodeVendor
https://www.wordfence.com/threat-intel/vulnerabilities/id/5b7d5d53-51a0-4d45-a180-0bde9edd8f4c?source=cve	[email protected]	AdvisoryRemedy

see all 9 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
Postie	<= 1.9.87 (semver)
CPE cpe:2.3:a:postieplugin:postie::::::wordpress::* Remediation Upgrade: 1.9.88moderate effort

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 29, 2026	CVE Modified	CISA-ADP
Oct 28, 2026	New CVE Received	[email protected]