CVE-2026-11751
armeria-xds TLS peer verification can be silently disabled, enabling MITM on xDS upstreams.
Is CVE-2026-11751 being exploited?
Not confirmed. CVE-2026-11751 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 0.24% probability of exploitation in the next 30 days.
How severe is CVE-2026-11751?
CVE-2026-11751 is rated Critical. 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-2026-11751?
Yes. A fix has been recorded for CVE-2026-11751. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-11751 affect?
CVE-2026-11751 affects armeria-xds < 1.41.0, Armeria-based services using xDS, xDS-managed upstream connections/service mesh setups. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-11751?
Upgrade to armeria-xds 1.41.0 and verify TLS peer verification settings.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attackers can perform man-in-the-middle attacks on xDS-managed upstream connections by bypassing TLS peer verification, intercepting or modifying traffic.
Immediate action required