HighCVSS 8.8
EPSS 0.29%
Privilege escalation in Firefox for iOS. This vulnerability was fixed in Firefox for iOS 160.0.
Product
mozilla Firefox for iOS vulnerabilities
63 published CVES affecting mozilla Firefox for iOS, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 63
- Critical
- 7
- High
- 9
- Medium
- 47
- Low
- 0
- Unscored
- 0
- CISA KEV
- 0
Latest mozilla Firefox for iOS CVEs
Newest publication first · page 1 of 3
-
-
HighCVSS 7.3 EPSS 0.18%
Other issue in Firefox for iOS. This vulnerability was fixed in Firefox for iOS 160.0.
-
HighCVSS 8.8 EPSS 0.29%
Privilege escalation in the Reader View component in Firefox for iOS. This vulnerability was fixed in Firefox for iOS 160.0.
-
MediumCVSS 5.4 EPSS 0.21%
A malicious web page could open a tel link in a window that was showing a different website, causing the phone-call prompt to appear as if that site had requested the call. This vulnerability was fixed in Firefox for iOS 156.1.
-
MediumCVSS 5.4 EPSS 0.21%
A malicious web page could insert arbitrary text into the FaceTime call prompt shown by iOS, potentialy allowing it to display a phishing message inside system UI. This vulnerability was fixed in Firefox for iOS 156.1.
-
MediumCVSS 5.5 EPSS 0.08%
Firefox for iOS could autofill saved credentials into a new page if cross-origin navigation occurred while the saved-login UI was open. Autofill was not bound to the originating page or rejected when its origin changed. This vulnerability was fixed in Firefox for iOS 157.1.
-
HighCVSS 8.8 EPSS 0.30%
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 f...
-
MediumCVSS 4.3 EPSS 0.28%
A malicious webpage could repeatedly trigger external URL schemes, causing system prompts or external application launches. This could make Firefox for iOS temporarily unusable until the page is closed. This vulnerability was fixed in Firefox for iOS 155.1.
-
CVE-2026-81267 Stalled popup navigation could allow address bar origin spoofing in Firefox for iOS
PublishedMediumCVSS 5.4 EPSS 0.26%A malicious webpage could stall a popup's cross-origin navigation after commit, causing the address bar to display the destination origin while continuing to render attacker-controlled content. This vulnerability was fixed in Firefox for iOS 155.0.
-
MediumCVSS 5.3 EPSS 0.29%
Pages with malicious titles could potentially allow saved PDF content to overwrite PDF files or bundled content within the Firefox for iOS application sandbox. This vulnerability was fixed in Firefox for iOS 152.4.
-
CVE-2026-13356 Interrupted navigation could allow address bar origin spoofing in Firefox for iOS
PublishedMediumCVSS 6.3 EPSS 0.22%A malicious webpage could interrupt a pending navigation by enqueuing a synchronous JavaScript dialog, causing the browser UI to display the destination origin in the address bar while continuing to render attacker-controlled content. This vulnerability was fixed in Firefox for i...
-
MediumCVSS 4.3 EPSS 0.10%
Firefox for iOS preserved cookies set on the initial PDF request across cross-origin HTTP redirects in TemporaryDocument, allowing a malicious site to inject arbitrary cookies into requests to an unrelated target domain. This vulnerability was fixed in Firefox for iOS 152.0.
-
MediumCVSS 6.5 EPSS 0.10%
Firefox for iOS used partial domain matching when attaching cookies to PDF requests, allowing a malicious site on a suffix domain to receive cookies belonging to the target site. This vulnerability was fixed in Firefox for iOS 152.0.
-
CVE-2026-9309 Arbitrary JavaScript execution in internal pages via Reader View JSON-LD injection
PublishedMediumCVSS 5.4 EPSS 0.16%Firefox for iOS Reader View did not properly escape HTML tags in JSON-LD metadata. A malicious page could inject markup that changed Reader View behavior and leaked sensitive URL parameters. These parameters could then be used to access internal pages, potentially resulting in ar...
-
CVE-2026-9308 Arbitrary JavaScript execution in Reader View due to wrong HTML replacement order
PublishedMediumCVSS 5.4 EPSS 0.16%Firefox for iOS Reader View replaced page content in its HTML template before replacing other internal placeholders. A malicious page could include a placeholder string that was later substituted with JSON-LD data, potentially resulting in arbitrary JavaScript execution. This vul...
-
MediumCVSS 5.4 EPSS 0.20%
Firefox for iOS displayed specially crafted right-to-left (RTL) and internationalized domain names (IDNs) incorrectly in link preview UI surfaces. A crafted RTL hostname could visually reorder portions of the displayed domain, causing attacker-controlled sites to appear as truste...
-
CVE-2026-8706 Sensitive user data could be leaked to other applications through Reader mode
PublishedMediumCVSS 6.5 EPSS 0.19%Firefox for iOS hosted Reader mode on an unauthenticated local web server, allowing another application on the same device to request arbitrary URLs and receive the response rendered with the signed-in user's cookies. This vulnerability was fixed in Firefox for iOS 151.0.
-
CriticalCVSS 9.8 EPSS 0.36%
Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attacker-controlled pages to be presented under spoofed domains. This vulnerability was fixed in Firefox for iOS 147.4.
-
MediumCVSS 4.3 EPSS 0.18%
Malicious scripts that interrupt new tab page loading could cause desynchronization between the address bar and page content, allowing the attacker to spoof arbitrary HTML under a trusted domain. This vulnerability was fixed in Firefox for iOS 147.2.1.
-
MediumCVSS 6.5 EPSS 0.21%
Unicode RTLO characters could allow malicious websites to spoof filenames in the downloads UI for Firefox for iOS, potentially tricking users into saving files of an unexpected file type. This vulnerability was fixed in Firefox for iOS 144.0.
-
MediumCVSS 4.0 EPSS 0.12%
Cookie storage for non-HTML temporary documents was being shared incorrectly with normal browsing content, allowing information from private tabs to escape Incognito mode even after the user closed all tabs. This vulnerability was fixed in Firefox for iOS 143.1.
-
HighCVSS 7.5 EPSS 0.36%
Malicious scripts could bypass the popup blocker to spam new tabs, potentially resulting in denial of service attacks. This vulnerability was fixed in Firefox for iOS 142.
-
CriticalCVSS 9.8 EPSS 0.46%
Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An attacker within Bluetooth range could have used this to trick the user into using their passkey to log the attacker's computer into the target account. This vulner...
-
CVE-2025-55028 JavaScript alerts could impede UI interaction or allow denial of service attacks
PublishedMediumCVSS 6.5 EPSS 0.24%Malicious scripts utilizing repetitive JavaScript alerts could prevent client user interaction in some scenarios and allow for denial of service attacks. This vulnerability was fixed in Firefox for iOS 142.
-
MediumCVSS 6.1 EPSS 0.17%
Firefox for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display the content inline rather than downloading, potentially allowing for XSS attacks. This vulnerability was fixed in Firefox for iOS 142.
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.