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VulnerabilityPublished Updated

CVE-2026-11722: IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by an HTTP

Source GCVE Database

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Authoritative record:CVE-2026-11722· Medium 4.8

Not known to be exploited · CVSS 4.8 Medium.

Data as of 2 Nov 2026, 22:58 UTC

CVSS 3.1 base score
4.8Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (ibm)CVSS 3.14.8
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:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
IBMWebSphere Application ServerAffected
  • =9.0
  • =8.5
Fixed in–
IBMWebSphere Application Server - LibertyAffected
  • >=17.0.0.3 <=26.0.0.5
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.

References

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