CVE-2026-8858
Last modified
CVE-2026-8858 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ibm | I | >= 7.3, <= 7.6 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2026-8858?
How severe is CVE-2026-8858?
How do I fix CVE-2026-8858?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-8852IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of serv…7.5
- CVE-2026-8853The MW WP Form plugin for WordPress is vulnerable to Stored …4.4
- CVE-2026-8854IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of serv…7.5
- CVE-2026-8855IBM HTTP Server 8.5, and 9.0 is vulnerable to remote code ex…9.8
- CVE-2026-8856IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of serv…9.1
- CVE-2026-8857A vulnerability in Wikimedia Foundation timeline. This vul…8.8
- CVE-2026-8859IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow a…9.9
- CVE-2026-8861IBM Security Verify could allow a remote attacker to obtain …5.3
- CVE-2026-8863Multiple Microsoft-sigend UEFI SHIM bootloaders are vulnerab…7.8
- CVE-2026-8864The HP Fan Control App might allow local escalation of privi…7.3
- CVE-2026-8865The Avalon23 Products Filter for WooCommerce plugin for Word…6.4
- CVE-2026-8866The jQuery googleslides plugin for WordPress is vulnerable t…6.4
Are you affected by CVE-2026-8858?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
