CVE-2026-12399Disclosure

LOWCVSS 4.4 · MEDIUM

Signal is active with 3 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

The Gutenverse – WordPress Blocks, Page Builder & Site Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 3.8.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

3 mentions across 1 observed day

What's happening

Technical details provided in 3 signals
Disclosure: 3 classified signals
3 total mentions across 1 day

Deep dive

Activity timeline3 mentions / 1d

Signal classification1 categories

Disclosure

3100.0%

Referenced assets3 URLs

By indicator

Full discourse3 posts

CVE@CVEnew90d
Disclosure
CVE-2026-12399 The Gutenverse – WordPress Blocks, Page Builder & Site Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up … https://www.cve.org/CVERecord?id=CVE-2026-12399
Post summary
The post announces a newly disclosed CVE-2026-12399 affecting the Gutenverse WordPress plugin, noting a stored XSS vulnerability via admin settings, but provides no PoC, exploit code, active usage claim, or patch information.
000201.2K
58.0K followersView on X
Vulmon Vulnerability Feed@VulmonFeeds91d
Disclosure
CVE-2026-12399 Stored Cross-Site Scripting in Gutenverse WordPress Plugin Versions Up to 3.8.0 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-12399
Post summary
The post announces a stored XSS flaw in the Gutenverse WordPress plugin up to version 3.8.0, presenting only the vulnerability details without any proof of concept, exploit code, or patch information.
00020124
4.1K followersView on X
Infoflowcloud@infoflowcloud90d
Disclosure
🚨*CVE* CVE-2026-12399 The Gutenverse – WordPress Blocks, Page Builder & Site Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up … https://www.cve.org/CVERecord?id=CVE-2026-12399 ----- Traducción: CVE-2026-12399 El … http://infoflow.cloud`
Post summary
A new CVE, CVE‑2026‑12399, has been identified for the Gutenverse WordPress plugin, describing a stored XSS flaw in admin settings; no PoC, exploit, patch, or active exploitation information is provided.
0000027
89 followersView on X

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