CVE-2026-8858 (GCVE-0-2026-8858)

Vulnerability from cvelistv5 – Published: 2026-06-22 14:16 – Updated: 2026-07-09 19:54
VLAI
Title
WebSphere Application Server Remote Code Execution
Summary
IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.
Severity
7.5 (High)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
ibm
References
URL Tags
https://www.ibm.com/support/pages/node/7276560 vendor-advisorypatch
Impacted products
Vendor Product Version
IBM WebSphere Application Server Affected: 8.5
Affected: 9.0
    cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.