CVE-2026-75134

MEDIUM 6.4

SEOWriting WordPress Plugin 1.12.5 Stored XSS via iframe onload

CVSS Score

6.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	seowriting
Product	seowriting
Published	Sep 2, 2026
Last Updated	Sep 3, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

SEOWriting / SEOWriting

0 ≤ 1.12.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/Elymaro/CVE/blob/main/WordPress/CVE-2026-75134.md wordpress.org: https://wordpress.org/plugins/seowriting/ vulncheck.com: https://www.vulncheck.com/advisories/seowriting-wordpress-plugin-stored-xss-via-iframe-onload

Credits

Elymaro (Aurélien Bourdois)