CVE-2026-78636

MEDIUM

Published Nov 8, 2026 Modified Nov 9, 2026 CWE-470

Description

IBM WebSphere Application Server Liberty 17.0.0.3 through 26.0.0.10 is affected by an information disclosure vulnerability due to unsafe class reflection in the JMX REST connector body parser.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0027

Probability of exploitation

0.20%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-470 CWE-470

References

Other References

https://www.ibm.com/support/pages/node/7295268

Frequently Asked Questions

What is CVE-2026-78636? +

IBM WebSphere Application Server Liberty 17.0.0.3 through 26.0.0.10 is affected by an information disclosure vulnerability due to unsafe class reflection in the JMX REST connector body parser. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-78636? +

CVE-2026-78636 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0027, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-78636? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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