Firefox for iOS Reader View did not properly escape HTML tags in JSON-LD metadata. A malicious page could inject markup that changed Reader View behavior and leaked sensitive URL parameters. These parameters could then be used to access internal pages, potentially resulting in arbitrary JavaScript execution in an internal origin. This vulnerability was fixed in Firefox for iOS 151.2.
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History
Mon, 01 Jun 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-79 | |
| Metrics |
cvssV3_1
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Mon, 01 Jun 2026 13:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Firefox for iOS Reader View did not properly escape HTML tags in JSON-LD metadata. A malicious page could inject markup that changed Reader View behavior and leaked sensitive URL parameters. These parameters could then be used to access internal pages, potentially resulting in arbitrary JavaScript execution in an internal origin. This vulnerability was fixed in Firefox for iOS 151.2. | |
| Title | Arbitrary JavaScript execution in internal pages via Reader View JSON-LD injection | |
| References |
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Status: PUBLISHED
Assigner: mozilla
Published:
Updated: 2026-06-01T13:51:37.592Z
Reserved: 2026-05-22T18:16:52.497Z
Link: CVE-2026-9309
Updated: 2026-06-01T13:51:19.816Z
Status : Received
Published: 2026-06-01T13:16:33.623
Modified: 2026-06-01T13:16:33.623
Link: CVE-2026-9309
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OpenCVE Enrichment
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