PT-2026-36950 · WordPress · Gutenverse

Athiwat Tiprasaharn · Published 2026-05-05 · Updated 2026-05-05 · CVE-2026-2868

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem versions prior to 3.5.4

Description Insufficient input sanitization and output escaping allow authenticated attackers with contributor-level access or higher to perform Stored Cross-Site Scripting. This is achieved by injecting arbitrary web scripts through the separatorIconSVG parameter, which execute when a user visits the affected page.

Recommendations Update to a version newer than 3.5.3. Avoid using the separatorIconSVG parameter until the update is applied.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-2868

Affected Products

Gutenverse

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-2868 · Security Note
• https://twitter.com/CVEarity/status/2051573312254533921 · Twitter Post
• https://plugins.trac.wordpress.org/changeset/3507804/gutenverse · Note
• https://t.me/cveNotify/162125 · Telegram Post
• https://wordfence.com/threat-intel/vulnerabilities/id/cc540e5c-180f-4743-b1fb-608aa0e3ae79?source=cve · Note