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VulnerabilityPublished

CVE-2026-16188: IBM WebSphere Application Server · Log Injection

Affects IBM WebSphere Application ServerSource CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 31% 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:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 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 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
IBMWebSphere Application ServerAffected
  • =9.0
  • =8.5
Fixed in–

CPE configurations (4)

  • cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*

AI-suggested

Until a fix is available, monitor logs carefully for suspicious entries and consider restricting access to logging interfaces.

Description

IBM WebSphere Application Server 9.0, and 8.5 could allow a remote attacker to inject forged log entries into the server's administrative log.

References

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