Request metadata disclosure via injected CSS background
Published Sep 16, 2026 · Updated Sep 16, 2026
CSS value injection in the A2UI Angular Renderer 0.10.0 through 0.10.6 allows remote attackers to trigger cross-origin requests via primaryColor. The createSurface schema accepts theme as z.any(), stores primaryColor verbatim, and feeds it through a CSS custom property into the button background shorthand. A malicious agent response can load an attacker-controlled URL, disclose request metadata, and overlay button imagery, but it does not execute script.
Summary
What happened
CSS value injection in the A2UI Angular Renderer 0.10.0 through 0.10.6 allows remote attackers to trigger cross-origin requests via primaryColor. The createSurface schema accepts theme as z.any(), stores primaryColor verbatim, and feeds it through a CSS custom property into the button background shorthand. A malicious agent response can load an attacker-controlled URL, disclose request metadata, and overlay button imagery, but it does not execute script.
The record
- CVE
- CVE-2026-92213
- Published
- Sep 16, 2026
- Updated
- Sep 16, 2026
- Vendor
- A2UI Project
- Product
- A2UI
- Classifications
- CWE-20
- Attack vector
- network
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 16, 2026CVE publishedPublication date reported by the CVE source.
- Sep 16, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.10.0
- Affected versionversion=0.10.1
- Affected versionversion=0.10.2
- Affected versionversion=0.10.3
- Affected versionversion=0.10.4
- Affected versionversion=0.10.5
- Affected versionversion=0.10.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- primaryColor CSS request proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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