Mozilla Firefox before 43.0 mishandles the # (number sign) character in a data: URI, which allows remote attackers to spoof web sites via unspecified vectors.
CVSS Details
- CVSS 3.1 Base Score: 4.3
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade linux-seamonkeyUpgrade firefox-esrUpgrade thunderbirdUpgrade linux-firefoxUpgrade seamonkeyUpgrade firefoxUpgrade linux-thunderbirdUpgrade libxul | Dec 10, 2025 | Dec 15, 2015 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade mail-client/thunderbird.Upgrade mail-client/thunderbird-bin.Upgrade www-client/firefox-bin. | Oct 30, 2017 | Dec 16, 2015 |
| Mfsa2015 141 | — | Upgrade to Mozilla Firefox version 43.0Upgrade to the latest version of Mozilla Firefox | Dec 18, 2015 | Dec 16, 2015 |
| Suse | — | Upgrade MozillaFirefoxUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-other | Jan 4, 2016 | Dec 16, 2015 |
| Ubuntu | — | Upgrade firefox | Dec 18, 2015 | Dec 15, 2015 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub