CVE-2026-121103

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 63/100
Published: 2026-11-03 Modified: 2026-11-10 First seen: 2026-11-03 Status: active

Attack Surface

Network Low Complexity No Auth Conf. Impact

CVSS Vector Breakdown

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

Description

Incorrect authorization in Extensions in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to obtain cross-origin data via a crafted Chrome extension. (Chromium security severity: Medium)

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
Google Chrome 157.0.8103.38 < 157.0.8103.38
Google Chrome 157.0.8103.38 < 157.0.8103.38
google chrome < 157.0.8103.38

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

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

EPSS — Exploitation Probability

0.21%
Raw Score 0.002050
Percentile 10.5%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00205
2026-11-13
0.00205
2026-11-12
0.00205
2026-11-10
0.00164
2026-11-09
0.00164
2026-11-08
0.00164
2026-11-07
0.00164
2026-11-06
0.00164
2026-11-05
0.00164
2026-11-04
0.00164

Intelligence Sources

mitre ref →
nvd ref →