Use-after-free in the Widget component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mozilla | Firefox | affected |
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Project Subscriptions
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Advisories
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Fixes
Solution
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Workaround
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References
History
Tue, 29 Sep 2026 13:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Use-after-free in the Widget component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. | |
| Title | Use-after-free in the Widget component | |
| References |
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Projects
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MITRE
Status: PUBLISHED
Assigner: mozilla
Published:
Updated: 2026-09-29T12:35:53.396Z
Reserved: 2026-09-26T19:15:14.718Z
Link: CVE-2026-100757
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-09-29T13:17:40.047
Modified: 2026-09-29T13:17:40.047
Link: CVE-2026-100757
Redhat
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OpenCVE Enrichment
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Weaknesses
No weakness.