CVE-2026-18535

CRITICAL
INFO Priority: 0.03 BB Relevance: 69/100
Published: 2026-11-07 Modified: 2026-11-08 First seen: 2026-11-07 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Scope Change

CVSS Vector Breakdown

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

Description

IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 are vulnerable to a Regular Expression Denial of Service (ReDoS) attack and to improper neutralisation of wildcard query operators.

Weakness Classification (1)

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

Bug Bounty Relevance

69 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

9.6 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H

EPSS — Exploitation Probability

0.29%
Raw Score 0.002870
Percentile 21.5%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00287
2026-11-12
0.00287
2026-11-10
0.00287
2026-11-09
0.00287
2026-11-08
0.00287
2026-11-07
0.00287

Intelligence Sources

mitre ref →
nvd ref →