# CVE-2026-91497: Oracle PeopleSoft PeopleTools unauthorized data modification

Source: https://junglewise.ai/threats/cve-2026-91497-vulnerability-in-the-peoplesoft-enterprise-peopletools-product-of  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-91497 · Severity: medium · CVSS 5.3 · Published 2026-10-20

Oracle PeopleSoft PeopleTools is an enterprise platform for managing human resources and business processes. An unauthenticated attacker on the network can exploit this vulnerability to modify, insert, or delete data in PeopleTools databases via an HTTP request, compromising data integrity without requiring login credentials.

Technologies: [Oracle PeopleSoft PeopleTools](https://junglewise.ai/threats/technologies/peoplesoft-peopletools). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-91497 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-91497 being exploited in the wild.

**How severe is CVE-2026-91497?** Medium severity, with a CVSS score of 5.3, published 20 October 2026.

**Which products and versions are affected?** Oracle PeopleSoft PeopleTools 8.61-8.63.

**Is there a fix for CVE-2026-91497?** 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-2026-91497 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-91497?** Check whether you run Oracle PeopleSoft PeopleTools 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 vulnerability in the Updates Environment Management component of PeopleTools allows unauthenticated network-based modification of database records through HTTP. An attacker with network access can directly alter, insert, or delete accessible data without authentication. The fix is available in patched versions beyond 8.63.

## Affected products

- Oracle PeopleSoft PeopleTools 8.61-8.63

## Timeline

- 2026-10-20: disclosed

## References

- [https://www.oracle.com/security-alerts/cpuoct2026.html](https://www.oracle.com/security-alerts/cpuoct2026.html)

## Related threats

- [Oracle PeopleSoft PeopleTools nVision data access vulnerability](https://junglewise.ai/threats/cve-2026-87409-vulnerability-in-the-peoplesoft-enterprise-peopletools-product-of)
- [Oracle PeopleSoft PeopleTools cross-site request forgery in Panel Processor](https://junglewise.ai/threats/cve-2026-87355-vulnerability-in-the-peoplesoft-enterprise-peopletools-product-of)
- [Oracle PeopleSoft PeopleTools LDAP privilege escalation](https://junglewise.ai/threats/cve-2026-87352-vulnerability-in-the-peoplesoft-enterprise-peopletools-product-of)
- [Oracle PeopleSoft PeopleTools data modification in Environment Management](https://junglewise.ai/threats/cve-2026-87348-vulnerability-in-the-peoplesoft-enterprise-peopletools-product-of)
- [Oracle PeopleSoft PeopleTools LDAP unauthenticated data access](https://junglewise.ai/threats/cve-2026-87344-vulnerability-in-the-peoplesoft-enterprise-peopletools-product-of)