CVE-2026-78636: IBM WebSphere Application Server – Liberty · Reflection Injection
Affects IBM WebSphere Application Server – LibertySource CVE Database V5
Not known to be exploited · CVSS 4.3 Medium.
Data as of 8 Nov 2026, 18:49 UTC
Thin evidence
One scorer or none| CNA (ibm) | CVSS 3.1 | 4.3 |
|---|
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 8 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| IBMWebSphere Application Server - Liberty | Affected
| Fixed in– |
CPE configurations (2)
cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.10:*:*:*:*:*:*:*
AI-suggested
Users should monitor IBM advisories for updates and apply patches once available.
Description
IBM WebSphere Application Server Liberty versions 17.0.0.3 through 26.0.0.10 contain an information disclosure vulnerability caused by unsafe class reflection in the JMX REST connector body parser. This flaw could allow an attacker with low privileges to gain limited information disclosure without user interaction. The vulnerability has a medium severity rating with a CVSS score of 4.3.