CVE-2026-103418
8.8 HIGHPublished 2026-10-13 · Updated 2026-10-14
AI risk analysis
- Summary
- Firefox for iOS was vulnerable to cross-site scripting (XSS) due to improper sanitization of HTML language attributes during translation processes, allowing attackers to inject malicious JavaScript that could execute in a privileged context and bypass Content Security Policy restrictions.
- Exploitability
- Exploitation requires a victim to visit a malicious webpage with a crafted HTML language attribute, making it moderately difficult but possible with social engineering.
- Blast radius
- If exploited, this vulnerability could allow attackers to execute arbitrary code in Firefox's privileged content world, potentially leading to full browser compromise and data exfiltration.
- Detection
- No reliable host or network indicator is derivable from the published description.
- Prioritized remediation
- Upgrade to Firefox for iOS 157.1 or later
xssmobilebrowsercsp-bypass
Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.
NVD description
Firefox for iOS directly interpolated the page’s HTML language attribute into translation JavaScript, allowing attacker-controlled markup to execute code in Firefox’s privileged content world and bypass the page’s Content Security Policy. This vulnerability was fixed in Firefox for iOS 157.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-79
All references
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
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