CRITICAL 9.2 NVD
CVE-2026-119717
pybars4 through 0.9.13 contains a code injection vulnerability in pybars/_compiler.py that allows attackers to execute Python code via unescaped bracketed path
pybars4 through 0.9.13 contains a code injection vulnerability in pybars/_compiler.py that allows attackers to execute Python code via unescaped bracketed path segments in Handlebars templates. Attackers can supply a template with a crafted segment in a helper or block argument to break out of the generated resolve() string literal and execute code in the application process.
References
- https://github.com/up9inc/pybars4
- https://github.com/up9inc/pybars4/blob/0.9.13/pybars/_compiler.py#L153-L154
- https://github.com/vladko312/advisories/blob/702e98db9642ece70d9e2150076d8014ffec2db3/pyba
- https://www.vulncheck.com/advisories/pybars4-through-0.9.13-code-injection-via-bracketed-p
This critical severity vulnerability with a CVSS score of 9.2 was published on 2026-10-30 via NVD.
Risk Timeline
CVE Disclosed2026-10-30 · -1 days ago
Remediation Resources
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