CVE-2026-11722: IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by an HTTP
Source GCVE Database
Not known to be exploited · CVSS 4.8 Medium.
Data as of 2 Nov 2026, 22:58 UTC
Thin evidence
One scorer or none| CNA (ibm) | CVSS 3.1 | 4.8 |
|---|
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 16% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 18 Sep 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 2 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| IBMWebSphere Application Server | Affected
| Fixed in– |
| IBMWebSphere Application Server - Liberty | Affected
| Fixed in– |
AI-suggested
No specific patches or mitigations are provided in the available data.
Description
IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by an HTTP request smuggling vulnerability (CVE-2026-11722). This vulnerability allows an attacker to interfere with HTTP request processing, potentially impacting confidentiality and integrity. The issue has a medium severity rating with a CVSS score of 4.8. No specific affected versions or patch information are provided in the available data.