SEOWriting plugin for WordPress through 1.12.5 contains a stored cross-site scripting vulnerability that allows authenticated contributors to inject malicious JavaScript by exploiting an overly permissive KSES allowlist that explicitly permits the onload event handler on iframe elements. Attackers can store crafted JavaScript payloads in post content that execute when the affected post is viewed or previewed by higher-privileged users, potentially leading to privilege escalation or account compromise.

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History

Thu, 03 Sep 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Seowriting
Seowriting seowriting
Wordpress
Wordpress wordpress
Vendors & Products Seowriting
Seowriting seowriting
Wordpress
Wordpress wordpress

Thu, 03 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 02 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Description SEOWriting plugin for WordPress through 1.12.5 contains a stored cross-site scripting vulnerability that allows authenticated contributors to inject malicious JavaScript by exploiting an overly permissive KSES allowlist that explicitly permits the onload event handler on iframe elements. Attackers can store crafted JavaScript payloads in post content that execute when the affected post is viewed or previewed by higher-privileged users, potentially leading to privilege escalation or account compromise.
Title SEOWriting WordPress Plugin 1.12.5 Stored XSS via iframe onload
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-03T14:39:59.287Z

Reserved: 2026-08-17T18:39:57.661Z

Link: CVE-2026-75134

cve-icon Vulnrichment

Updated: 2026-09-03T14:39:55.008Z

cve-icon NVD

Status : Received

Published: 2026-09-02T20:17:36.577

Modified: 2026-09-03T15:17:33.000

Link: CVE-2026-75134

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-03T15:33:47Z

Weaknesses