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PatchSiren cyber security CVE debrief

CVE-2026-93905 IBM CVE debrief

IBM WebSphere Application Server Liberty is affected by a deserialization of untrusted data vulnerability. An unauthenticated remote attacker could corrupt the persisted status of batch job instances. The CVSS score is 8.2, indicating high severity. Defenders should assess exposure and prioritize patching for versions 17.0.0.3 through 26.0.0.10. This vulnerability could lead to potential corruption of batch job instances, emphasizing the need for verification and patching. The CVE record and source item provide details on the vulnerability and affected versions.

Vendor
IBM
Product
WebSphere Application Server - Liberty
CVSS
HIGH 8.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-13
Original CVE updated
2026-10-14
Advisory published
2026-10-13
Advisory updated
2026-10-14

Who should care

Defenders responsible for WebSphere Application Server - Liberty deployments, particularly those using versions 17.0.0.3 through 26.0.0.10, should assess exposure and prioritize patching.

Why it matters

Defenders should prioritize verifying exposure and applying patches for IBM WebSphere Application Server Liberty due to a deserialization of untrusted data vulnerability, which could lead to corruption of batch job instances.

  • Potential corruption of batch job instances
  • Requires verification of exposure and patching
  • Unauthenticated remote attack surface

Technical summary

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 is affected by a deserialization of untrusted data vulnerability. An unauthenticated remote attacker could exploit this vulnerability to corrupt the persisted status of batch job instances.

Defensive priority

Defenders should prioritize verifying exposure and applying patches, as an unauthenticated remote attacker could potentially corrupt batch job instances.

Recommended defensive actions

  • Verify exposure by checking if WebSphere Application Server - Liberty versions 17.0.0.3 through 26.0.0.10 are in use
  • Apply patches as recommended by the vendor
  • Monitor for potential corruption of batch job instances

Evidence notes

The CVE record and source item provide details on the vulnerability, affected versions, and a reference to the vendor advisory. Evidence is limited to public CVE details and may not reflect the full scope or nuances of the vulnerability. Defenders should verify exposure and apply patches as recommended by the vendor. The vulnerability affects IBM WebSphere Application Server - Liberty versions 17.0.0.3 through 26.0.0.10, and an unauthenticated remote attacker could exploit this to The

Sources and references

Verified primary and authoritative sources

  • CVE-2026-93905 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-93905

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-93905 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-93905

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.