Affects IBM WebSphere — widely used enterprise app server; admin-console compromise can impact many organizations and warrant broad alerting.
CVE-2026-11707
XSS in IBM WebSphere/Tivoli admin login page enabling admin credential/session compromise
Is CVE-2026-11707 being exploited?
Not confirmed. CVE-2026-11707 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.22% probability of exploitation in the next 30 days.
How severe is CVE-2026-11707?
CVE-2026-11707 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-11707?
Yes. A fix has been recorded for CVE-2026-11707. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-11707 affect?
CVE-2026-11707 affects IBM Tivoli System Automation Application Manager 4.1, IBM WebSphere Application Server (admin console). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-11707?
Apply vendor patch if released; restrict admin console access, enable WAF and MFA
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
XSS on admin login page allows injected JS to steal admin credentials/cookies, hijack admin sessions, or perform actions as admin.
Immediate action required
- affected4.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.