CVE-2026-10827 (GCVE-0-2026-10827)
Vulnerability from cvelistv5 – Published: 2026-08-01 06:00 – Updated: 2026-08-05 16:19
VLAI
EPSS
VEX
Title
Spectra (Ultimate Addons for Gutenberg) < 2.20.0 - Contributor+ Stored CSS Injection via Block Attributes
Summary
The Spectra Legacy WordPress plugin before 2.20.0 does not validate or escape several block style attributes before using them to build the CSS it outputs on the front end, allowing users with the Contributor role and above to inject arbitrary CSS into the pages that render the affected block. The injected styles are served to anonymous visitors of those pages and can force external resource loads, deface/redress the page, or exfiltrate data via CSS attribute selectors. JavaScript execution is not possible at this role (the script-tag breakout is removed by KSES), so the impact is limited to CSS injection.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 16:07 UTC
CWE
- CWE-345 Insufficient Verification of Data Authenticity
- CWE-345 - Insufficient Verification of Data Authenticity
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/068ac525-423b-42… | exploitvdb-entrytechnical-description |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Unknown | Spectra Legacy |
Affected:
0 , < 2.20.0
(semver)
|
guessed |
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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