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VulnerabilityPublished

CVE-2026-11897: IBM WebSphere Application Server – Liberty · Unthrottled Resource Allocation

Affects IBM WebSphere Application Server – LibertySource CVE Database V5

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Not known to be exploited · CVSS 7.5 High.

Data as of 29 Oct 2026, 07:15 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 44% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Jul 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 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
IBMWebSphere Application Server - LibertyAffected
  • >=17.0.0.3 <=26.0.0.7
Fixed in–
Mavencom.ibm.websphere/websphere_application_server_libertypkg:maven/com.ibm.websphere/websphere_application_server_libertyOther threatsAffected
  • =17.0.0.3
  • <=26.0.0.7 >=17.0.0.3
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:26.0.0.7:*:*:*:*:*:*:*

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until an official fix is available, consider implementing network-level protections such as rate limiting or filtering to reduce exposure to specially crafted requests targeting this vulnerability.

Description

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to a denial of service, caused by sending a specially crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources.

References

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