CVE-2026-8706

Name: CVE-2026-8706
Creator: NVD / NIST
Published: 2026-05-19T16:16:22.58+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2026-8706 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.19%

9.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 151.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2036618Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-49/Vendor Advisory

Timeline

Published: May 19, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-8706?

How severe is CVE-2026-8706?

CVE-2026-8706 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2026-8706?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-8706?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST