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CVE-2020-26950 In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an…
Description
In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 82.0 | earliest → < 82.0.3 | 82.0.3 |
| Firefox ESR 78.4 | earliest → < 78.4.1 | 78.4.1 |
| Thunderbird 78.4 | earliest → < 78.4.2 | 78.4.2 |
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