High [CVE-2026-92218] Server-Side Template Injection via two-pass non-sandboxed Jinja render
This high-severity Red Hat Linux advisory covers CVE-2026-92218.
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Summary
Server-Side Template Injection via two-pass non-sandboxed Jinja render. Red Hat rates this important (CVSS 8.2).
Weakness: CWE-94.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Mitigation checklist
- Suggestion: Remove the second-pass render, or if double expansion is required use jinja2.sandbox.ImmutableSandboxedEnvironment for both passes and reject/escape '{{', '{%', '{#' sequences in template_data values before rendering. Add a unit test asserting that a data value containing Jinja syntax is emitted literally.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
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