What is CVE-2026-10571?

CVE-2026-10571 is a medium-severity vulnerability in Ibm Websphere Application Server - Liberty, classified under Deserialization of Untrusted Data. CVSS score: 5.7/10. Published 2026-08-13.

How severe is CVE-2026-10571?

Medium severity. CVSS v3 base score is 5.7 out of 10.

Deserialization in Ibm Websphere Application Server - Liberty

CVE-2026-10571

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is affected by a denial of service caused by insecure deserialization. A low-privileged, administrative user could exploit this vulnerability to consume system resources when the restConnector-2.0 feature is enabled.

Vulnerability class: Insecure Deserialization

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Ibm Websphere Application Server - Liberty — versions 17.0.0.3

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-10571?: CVE-2026-10571 is a medium-severity vulnerability in Ibm Websphere Application Server - Liberty, classified under Deserialization of Untrusted Data. CVSS score: 5.7/10. Published 2026-08-13.
How severe is CVE-2026-10571?: Medium severity. CVSS v3 base score is 5.7 out of 10.