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red-hatCVE-2026-71463

Notification template Jinja AST whitelist only inspects static Getattr nodes. Dynamic subscripts (job['job'+'_env']) and {% if job.

Low2.7CVE-2026-71463 · Published Sep 23, 2026 · updated Sep 25, 2026

Source advisory

Affected versions

PackageAffectedFixed in
Details and references

Notification template Jinja AST whitelist only inspects static Getattr nodes. Dynamic subscripts (job['job'+'_env']) and {% if job.id > 100 %} conditional gating bypass both the AST check and the test-render (stub has small job.id). At runtime, the gated branch executes and exceptions write full tracebacks into notification body, which is POSTed to attacker-controlled webhook URL. Leaks install paths, Python version, source line numbers.

CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Severity from
no source yet
Weakness
CWE-209

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