7.2High

CVE-2026-3876Prismatic <= 3.7.3 - Unauthenticated Stored Cross-Site Scripting via 'prismatic_encoded' Pseudo-Shortcode

specialk Prismatic Published: 2026-04-16 09:44 (7 months ago)

Description

The Prismatic plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'prismatic_encoded' pseudo-shortcode in all versions up to, and including, 3.7.3. This is due to insufficient input sanitization and output escaping on user-supplied attributes within the 'prismatic_decode' function. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page by submitting a comment containing a crafted 'prismatic_encoded' pseudo-shortcode.

Weakness (CWE): CWE-79

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

Vendor	Product	Versions
specialk	Prismatic	≤ 3.7.3

References and patches

CVSS score

7.2High

Source: Wordfence · CVSS 3.1

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Changed
Confidentiality: Low
Integrity: Low
Availability: None

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

All scores (2)

cna	CVSS 3.1	7.2High
security@wordfence.com	CVSS 3.1	7.2High

EPSS (chance of exploitation in 30 days)

0.29%

higher than 21% of all CVEs

CISA assessment (SSVC)

Exploitation: none
Automatable: yes
Technical impact: partial

Timeline

ID reserved2026-03-10
Published2026-04-16 09:44
Reached IP-DB2026-10-24 23:49
Last updated2026-06-17 13:44

Assigned by (CNA): Wordfence
NVD status: Deferred

View at source: CVE.org · NVD

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