What is CVE-2026-108334?

CVE-2026-108334 is a high-severity vulnerability in Red Hat Connectivity Link 1, classified under Improper Neutralization of Special Elements used in an Expression Language Statement (Expression Language Injection). CVSS score: 7.4/10. Published 2026-10-15.

How severe is CVE-2026-108334?

High severity. CVSS v3 base score is 7.4 out of 10.

RCE in Red Hat Connectivity Link 1

CVE-2026-108334

A flaw was found in the internal WebAssembly (WASM) shim used by the Kuadrant operator. When generating the CEL predicate that determines whether Gateway-level authentication and rate limiting should run, the shim does not correctly escape values from HTTPRoute match fields. A user who can create or modify an HTTPRoute attached to a shared Gateway can provide a crafted path, header, or query match value that causes the predicate to skip those checks. The request is still forwarded to the route’s backend.

Vulnerability class: Log4Shell (CVE-2021-44228)

Published 2026-10-15 · last modified 2026-10-15.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-917 — Improper Neutralization of Special Elements used in an Expression Language Statement (Expression Language Injection)

References

access.redhat.com/security/cve/CVE-2026-108334 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)

Frequently asked questions

What is CVE-2026-108334?: CVE-2026-108334 is a high-severity vulnerability in Red Hat Connectivity Link 1, classified under Improper Neutralization of Special Elements used in an Expression Language Statement (Expression Language Injection). CVSS score: 7.4/10. Published 2026-10-15.
How severe is CVE-2026-108334?: High severity. CVSS v3 base score is 7.4 out of 10.