CVE-2026-32811
URL-encoding bug in Heimdall envoy gRPC path handling bypasses non-wildcard rules.
Is CVE-2026-32811 being exploited?
Not confirmed. CVE-2026-32811 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 0.30% probability of exploitation in the next 30 days.
How severe is CVE-2026-32811?
CVE-2026-32811 is rated High with a CVSS score of 8.2. 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-2026-32811?
Yes. A fix has been recorded for CVE-2026-32811. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-32811 affect?
CVE-2026-32811 affects Heimdall (envoy gRPC decision API, v0.7.0-alpha to v0.17.10). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-32811?
Patch to 0.17.11+; enforce secure defaults; remove insecure flags.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Bypasses path-based access rules, enabling unintended access if default allow-all is configured.
Patch when possible
- affected>= 0.7.0-alpha and < 0.17.11
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.