CVE-2026-17358

HIGH
MEDIUM Priority: 0.04 BB Relevance: 56/100
Published: 2026-11-07 Modified: 2026-11-11 First seen: 2026-11-07 Status: active

Attack Surface

Network No Interaction Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

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

Description

IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to bypass authentication across tenants due to improper authentication. Authentication checks are not sufficiently isolated between tenants, which could allow a user from one tenant to be accepted by another.

Affected Software (4)

VendorProductVersion
IBM API Connect 12.1.0.0
IBM API Connect 10.0.8.0
IBM API Connect 12.1.0.0
IBM API Connect 10.0.8.0

References & Advisories (2)

Bug Bounty Relevance

56 / 100
✓ Network accessible
✓ No user interaction

CVSS Score

8.2 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

EPSS — Exploitation Probability

0.48%
Raw Score 0.004770
Percentile 41.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00477
2026-11-12
0.00477
2026-11-10
0.00477
2026-11-09
0.00477
2026-11-08
0.00477
2026-11-07
0.00477

Intelligence Sources

mitre ref →
nvd ref →