Due to insufficient escaping of the ampersand character in the “Copy as cURL” feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system. *This bug only affects Firefox for Windows. Other versions of Firefox are unaffected.*. This vulnerability was fixed in Firefox 139, Firefox ESR 115.24, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade firefoxUpgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade firefox-debuginfo | Jun 12, 2025 | May 27, 2025 |
| Amazon_linux_2023 | — | Upgrade firefox-debuginfoUpgrade firefox-debugsourceUpgrade firefox | Jun 11, 2025 | May 27, 2025 |
| Mfsa2025 42 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 139.0 | May 28, 2025 | May 27, 2025 |
| Mfsa2025 43 | — | Upgrade to Mozilla Firefox ESR version 115.24Upgrade to the latest version of Mozilla Firefox | May 28, 2025 | May 27, 2025 |
| Mfsa2025 44 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 128.11 | May 28, 2025 | May 27, 2025 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 128.11Upgrade to the latest version of Mozilla Thunderbird | May 28, 2025 | May 27, 2025 |
| Suse | — | Upgrade libmozjs-128-0Upgrade mozjs128-develUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-develUpgrade MozillaThunderbirdUpgrade MozillaFirefoxUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefox-translations-commonUpgrade mozjs128Upgrade MozillaThunderbird-translations-commonUpgrade mozillafirefox-branding-upstream | Jun 3, 2025 | May 27, 2025 |
| Ubuntu | — | Upgrade thunderbird | Jun 26, 2025 | May 27, 2025 |
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