Dashboard / CVE-2026-53899

CVE-2026-53899

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 73/100
Published: 2026-06-16 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: Low
I: Low
A: None

Description

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
mozilla firefox_mobile < 152.0

References & Advisories (2)

Bug Bounty Relevance

73 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS — Exploitation Probability

0.10%
Raw Score 0.000960
Percentile 0.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00096
2026-10-28
0.00096

Intelligence Sources

nvd ref →

External Links