# CVE-2026-3161: IBM Cloud Pak System weak cryptographic algorithm

Source: https://junglewise.ai/threats/cve-2026-3161-ibm-cloud-pak-system-2-3-6-0-and-2-3-6-1-uses-weaker-than-expected  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-19. Updated: 2026-10-19  
License: CC BY 4.0 with a link back

CVE-2026-3161 · Severity: medium · CVSS 5.9 · Published 2026-10-19

IBM Cloud Pak System, a containerized enterprise platform, uses weak encryption algorithms that could allow an attacker to decrypt sensitive data. An attacker with network access could potentially extract highly confidential information such as credentials or business data without requiring authentication or user interaction.

Technologies: [IBM Cloud Pak System](https://junglewise.ai/threats/technologies/cloud-pak-system). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-3161 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-3161 being exploited in the wild.

**How severe is CVE-2026-3161?** Medium severity, with a CVSS score of 5.9, published 19 October 2026.

**Which products and versions are affected?** IBM Cloud Pak System 2.3.6.0, 2.3.6.1.

**Is there a fix for CVE-2026-3161?** Yes: fixed in 2.3.6.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-3161 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-3161?** Check whether you run IBM Cloud Pak System at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 2.3.6.2

## Technical details

IBM Cloud Pak System uses a broken or risky cryptographic algorithm (CWE-327) that allows attackers to decrypt sensitive information. The vulnerability is network-accessible and does not require authentication or user interaction; exploitation requires high complexity. An attacker gains the ability to read encrypted sensitive data.

## Affected products

- IBM Cloud Pak System 2.3.6.0, 2.3.6.1

## Timeline

- 2026-10-19: disclosed

## References

- [https://www.ibm.com/support/pages/node/7290183](https://www.ibm.com/support/pages/node/7290183)

## Related threats

- [IBM Cloud Pak System HTML injection vulnerability](https://junglewise.ai/threats/cve-2026-4418-ibm-cloud-pak-system-2-3-6-0-and-2-3-6-1-is-vulnerable-to-html)
- [IBM Cloud Pak System stored cross-site scripting](https://junglewise.ai/threats/cve-2026-3295-ibm-cloud-pak-system-2-3-6-0-and-2-3-6-1-is-vulnerable-to-cross)
- [IBM Cloud Pak System cross-site scripting in Web UI](https://junglewise.ai/threats/cve-2023-38375-ibm-cloud-pak-system-2-3-6-0-and-2-3-6-1-is-vulnerable-to-cross)
- [IBM Cloud Pak System information disclosure in log files](https://junglewise.ai/threats/cve-2026-13463-ibm-cloud-pak-system-information-disclosure-in-log-files)