HOMEVULNERABILITIESCVE-2026-8706
MEDIUM

CVE-2026-8706

CWE-200Published: May 19, 2026· Updated: May 20, 2026

6.5
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:3.2th

Official 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.

NVD Source

Technical Analysis

CVE-2026-8706 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

Mozilla1 product
firefox
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2026-49/

All References (2)

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

Quick Facts

CVE IDCVE-2026-8706
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-200
CISA KEVNo
EPSS (30d)0.01%
Affected1 vendor
PublishedMay 19, 2026

Related CVEs (CWE-200)

CVE-2026-40965
10.0
CVE-2026-27604
10.0
CVE-2026-21515
9.9
CVE-2026-54305
9.9
CVE-2026-43992
9.8
CVE-2026-41492
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-8706 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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