Firefox for iOS Reader View replaced page content in its HTML template before replacing other internal placeholders. A malicious page could include a placeholder string that was later substituted with JSON-LD data, potentially resulting in arbitrary JavaScript execution. 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 replaced page content in its HTML template before replacing other internal placeholders. A malicious page could include a placeholder string that was later substituted with JSON-LD data, potentially resulting in arbitrary JavaScript execution. This vulnerability was fixed in Firefox for iOS 151.2. | |
| Title | Arbitrary JavaScript execution in Reader View due to wrong HTML replacement order | |
| References |
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Status: PUBLISHED
Assigner: mozilla
Published:
Updated: 2026-06-01T13:52:59.059Z
Reserved: 2026-05-22T18:16:25.742Z
Link: CVE-2026-9308
Updated: 2026-06-01T13:52:02.702Z
Status : Received
Published: 2026-06-01T13:16:33.523
Modified: 2026-06-01T13:16:33.523
Link: CVE-2026-9308
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OpenCVE Enrichment
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