CVE Explorer
CVE-2026-12900
The Spectra Gutenberg Blocks – Website Builder for the Block Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `uagb/image` block in all versions up to, and including, 2.19.28 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"Spectra Legacy – Gutenberg Blocks","vendor":"brainstormforce","versions":[{"lessThanOrEqual":"2.19.28","status":"affected","version":"0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:67432736ebda5efc8200136e2ae7c0e3541f628d6f249683298bc980f29ee8f4 · sha256:1df91579a0481c92… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"baseScore":6.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:67432736ebda5efc8200136e2ae7c0e3541f628d6f249683298bc980f29ee8f4 · sha256:1df91579a0481c92… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:67432736ebda5efc8200136e2ae7c0e3541f628d6f249683298bc980f29ee8f4 · sha256:1df91579a0481c92… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"url":"https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/tags/2.19.28/blocks-config/image/class-uagb-image.php#L59"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:67432736ebda5efc8200136e2ae7c0e3541f628d6f249683298bc980f29ee8f4 · sha256:1df91579a0481c92… · /containers/cna/references/1
{"url":"https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/tags/2.19.28/includes/blocks/image/block.php#L10"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:67432736ebda5efc8200136e2ae7c0e3541f628d6f249683298bc980f29ee8f4 · sha256:1df91579a0481c92… · /containers/cna/references/2
{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/0e9dc5e3-9d72-4c04-8ba9-56428a6fdddd?source=cve"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:67432736ebda5efc8200136e2ae7c0e3541f628d6f249683298bc980f29ee8f4 · sha256:1df91579a0481c92… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.