CVE-2026-18488
Blocksy Companion <= 2.1.51 - Authenticated (Author+) Stored Cross-Site Scripting via 'tagName' Block Attribute (blocksy/dynamic-data)
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
The Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'tagName' Block Attribute (blocksy/dynamic-data) in all versions up to, and including, 2.1.51 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- creativethemeshq Blocksy Companion
through 2.1.51
References 11
plugins.trac.wordpress.org
- browser/blocksy-companion/tags/2.1.51/framework/features/blocks/dynamic-data/views/wp-field.php#L487
- browser/blocksy-companion/tags/2.1.51/framework/features/blocks/dynamic-data/views/wp-field.php#L448
- browser/blocksy-companion/tags/2.1.51/framework/features/blocks/dynamic-data/block.php#L183
- browser/blocksy-companion/tags/2.1.51/static/js/editor/blocks/dynamic-data/block.json#L7
- browser/blocksy-companion/tags/2.1.4/framework/features/blocks/dynamic-data/views/wp-field.php#L487
- browser/blocksy-companion/tags/2.1.4/framework/features/blocks/dynamic-data/views/wp-field.php#L448
- browser/blocksy-companion/tags/2.1.4/framework/features/blocks/dynamic-data/block.php#L183
- browser/blocksy-companion/tags/2.1.4/static/js/editor/blocks/dynamic-data/block.json#L7
- changeset/3636709/blocksy-companion/trunk/framework/features/blocks/dynamic-data/views/wp-field.php
- changeset?old_path=%2Fblocksy-companion/tags/2.1.51&new_path=%2Fblocksy-companion/tags/2.1.52