[UPDATE] [high] IBM App Connect Enterprise: Multiple Vulnerabilities

CSIRTS triage

What

Multiple vulnerabilities allow attackers to bypass security precautions, conduct denial of service attacks, disclose information, and manipulate data.

Who is affected

All deployments of IBM App Connect Enterprise.

Urgency

High severity requires prompt patching; no active exploitation reported but multiple attack vectors present.

Action

Check IBM security advisories for affected versions and apply available patches immediately.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

CERT-Bund (BSI) Security Advisories (DE · national-cert · site)

Severity

high

Published

2026-08-06

Exploitation

Not in CISA KEV at last sync

Language

Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2618

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2026-115250.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-121510.79% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 53% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-136760.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-535500.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-542850.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-598690.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-598770.37% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 30% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-67330.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-67340.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-96750.43% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• high[NEW] [high] Red Hat Ansible Automation Platform (node-tar, linkify-it, protobufjs, brace-expansion, fast-uri,…cert-bund
• medium[NEW] [medium] Red Hat OpenShift Container Platform (fast-uri, OpenTelemetry-Go): Multiple vulnerabilitiescert-bund
• unknownMultiple vulnerabilities in IBM products (July 31, 2026)cert-fr-avis
• highGHSA-4c8g-83qw-93j6: fast-uri vulnerable to host confusion via failed IDN canonicalizationghsa
• mediumGHSA-j3f2-48v5-ccww: protobufjs: Denial of Service via infinite loop in .proto option parsingghsa
• unknownMultiple vulnerabilities in IBM products (July 17, 2026)cert-fr-avis
• unknownMultiple vulnerabilities in Microsoft Azure Linux (July 15, 2026)cert-fr-avis
• highCVE-2026-59869: js-yaml: YAML merge-key chains can force quadratic CPU consumptionmsrc
• mediumCVE-2026-59877: protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.6.5 and 8.…nvd
• highCVE-2026-59869: js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before…nvd
• highCVE-2026-13676: fast-uri versions 2.3.1 through 3.1.2 and 4.0.0 fail to canonicalize Unicode (IDN) hostnames f…nvd
• unknownMultiple vulnerabilities in Microsoft Azure Linux (June 29, 2026)cert-fr-avis

Recent advisories for IBM App Connect Enterprise

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

• medium[UPDATE] [medium] IBM App Connect Enterprise: Multiple vulnerabilitiescert-bund · 2026-08-05
• medium[UPDATE] [medium] IBM App Connect Enterprise (Axios): Multiple vulnerabilitiescert-bund · 2026-08-04
• high[UPDATE] [high] IBM App Connect Enterprise Certified Container: Multiple vulnerabilitiescert-bund · 2026-08-04
• medium[NEW] [medium] IBM App Connect Enterprise: Multiple vulnerabilitiescert-bund · 2026-08-03
• high[NEW] [high] IBM App Connect Enterprise: Multiple vulnerabilitiescert-bund · 2026-07-31
• criticalCVE-2026-15435: IBM App Connect Enterprise 13.0.1.0 through 13.0.7.2, and 12.0.1.0 through 12.0.12.27 could al…nvd · 2026-07-30

More from CERT-Bund (BSI) Security Advisories

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• medium[UPDATE] [medium] Golang Go: Multiple vulnerabilities2026-08-07
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