# CVE-2026-108588: IBM Db2 Genius Hub MIME type sniffing via missing header

Source: https://junglewise.ai/threats/cve-2026-108588-ibm-db2-genius-hub-1-1-2-1-1-3-1-1-4-1-1-5-could-allow-a-remote  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-04. Updated: 2026-11-04  
License: CC BY 4.0 with a link back

CVE-2026-108588 · Severity: medium · CVSS 5.4 · Published 2026-11-04

IBM Db2 Genius Hub is a database management tool used to administer and monitor Db2 database systems. A missing security header allows authenticated attackers to bypass browser protections against MIME type sniffing, potentially leading to execution of unintended content or data exposure. This is particularly concerning if an attacker can combine this with other vulnerabilities to serve malicious content.

Technologies: [IBM Db2 Genius Hub](https://junglewise.ai/threats/technologies/db2-genius-hub). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-108588 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-108588 being exploited in the wild.

**How severe is CVE-2026-108588?** Medium severity, with a CVSS score of 5.4, published 4 November 2026.

**Which products and versions are affected?** IBM Db2 Genius Hub 1.1.2, 1.1.3, 1.1.4, 1.1.5.

**Is there a fix for CVE-2026-108588?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-108588 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-108588?** Check whether you run IBM Db2 Genius Hub 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.

## Technical details

The application fails to set the X-Content-Type-Options header, which normally instructs browsers not to sniff MIME types. An authenticated remote attacker can exploit this to bypass content-type restrictions by crafting responses that browsers will interpret as executable code rather than their declared type. The attack requires prior authentication and network access to the application.

## Affected products

- IBM Db2 Genius Hub 1.1.2, 1.1.3, 1.1.4, 1.1.5

## Timeline

- 2026-11-04: disclosed

## References

- [https://www.ibm.com/support/pages/node/7295187](https://www.ibm.com/support/pages/node/7295187)

## Related threats

- [IBM Db2 Genius Hub denial of service in resource validation](https://junglewise.ai/threats/cve-2026-110283-ibm-db2-genius-hub-1-1-2-1-1-3-1-1-4-1-1-5-could-allow-a-remote)
- [IBM Db2 Genius Hub access control bypass](https://junglewise.ai/threats/cve-2026-110282-ibm-db2-genius-hub-1-1-2-1-1-3-1-1-4-1-1-5-could-allow-a-remote)
- [IBM Db2 Genius Hub TLS certificate validation bypass](https://junglewise.ai/threats/cve-2026-110281-ibm-db2-genius-hub-1-1-2-1-1-3-1-1-4-1-1-5-improperly-validates)
- [IBM Db2 Genius Hub information disclosure due to missing cryptographic step](https://junglewise.ai/threats/cve-2026-108910-ibm-db2-genius-hub-1-1-2-1-1-3-1-1-4-1-1-5-could-allow-a-remote)
- [IBM Db2 Genius Hub HTTP response splitting in header handling](https://junglewise.ai/threats/cve-2026-108767-ibm-db2-genius-hub-1-1-2-1-1-3-1-1-4-1-1-5-could-allow-a-remote)