How severe is CVE-2024-26284?

CVE-2024-26284 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-26284 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-26284?

CVE-2024-26284 affects Mozilla Firefox Focus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-26284?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-26284 have an EU (EUVD) identifier?

Yes. CVE-2024-26284 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-23555.

When was CVE-2024-26284 published?

CVE-2024-26284 was published on 2024-02-22 and last updated on 2026-06-17.

CVE-2024-26284

CVE-2024-26284 is a medium-severity vulnerability in Mozilla Firefox Focus with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-23555
Weakness: CWE-79
Affected product: Mozilla Firefox Focus
Published: 2024-02-22
Last modified: 2026-06-17

Description

Utilizing a 302 redirect, an attacker could have conducted a Universal Cross-Site Scripting (UXSS) on a victim website, if the victim had a link to the attacker's website. This vulnerability affects Focus for iOS < 123.

Frequently asked questions

What is CVE-2024-26284?: Utilizing a 302 redirect, an attacker could have conducted a Universal Cross-Site Scripting (UXSS) on a victim website, if the victim had a link to the attacker's website. This vulnerability affects Focus for iOS < 123.
How severe is CVE-2024-26284?: CVE-2024-26284 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-26284 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-26284?: CVE-2024-26284 affects Mozilla Firefox Focus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-26284?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-26284 have an EU (EUVD) identifier?: Yes. CVE-2024-26284 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-23555.
When was CVE-2024-26284 published?: CVE-2024-26284 was published on 2024-02-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mozilla:firefox_focus:*:*:*:*:*:iphone_os:*:*

More vulnerabilities in Mozilla Firefox Focus

CVE-2025-55031 — Critical (CVSS 9.8): Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An…
CVE-2022-26486 — Critical (CVSS 9.6): An unexpected message in the WebGPU IPC framework could lead to a use-after-free and exploitable sandbox escape. We…
CVE-2023-29534 — Critical (CVSS 9.1): Different techniques existed to obscure the fullscreen notification in Firefox and Focus for Android. These could have…
CVE-2022-26485 — High (CVSS 8.8): Removing an XSLT parameter during processing could have lead to an exploitable use-after-free. We have had reports of…
CVE-2024-1563 — High (CVSS 8.1): An attacker could have executed unauthorized scripts on top origin sites using a JavaScript URI when opening an…
CVE-2026-8945 — High (CVSS 7.5): Sandbox escape in Firefox and Firefox Focus for Android. This vulnerability was fixed in Firefox 151.

All CVEs affecting Mozilla Firefox Focus →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2026-106102 — Critical (CVSS 10.0): Quasar Framework is a framework for building high-performance Vue.js user interfaces. Prior to 2.22.0, the SSR-only…
CVE-2026-59167 — Critical (CVSS 10.0): SunEditor is a lightweight and powerful WYSIWYG editor in vanilla JavaScript with no dependencies. Prior to 2.47.11,…
CVE-2026-85061 — Critical (CVSS 10.0): MapLibre GL JS is an interactive vector tile map library for web browsers. Prior to 6.4.1, DOM.sanitize() in…
CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →