Description
pybars3 through 0.9.7 contains a code injection vulnerability in pybars/_compiler.py that allows template authors to execute Python code via unescaped bracketed path segments. Attackers can supply Handlebars templates with crafted segments in helper or block arguments to break out of string literals and execute Python in the application process.
References
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2026-119716 ↗
- github.com/vladko312/advisories/blob/702e98db9642ece70d9e2150076d8014ffec2db3/pybars3.md ↗
- github.com/wbond/pybars3 ↗
- github.com/wbond/pybars3/blob/0.9.7/pybars/_compiler.py ↗
- github.com/wbond/pybars3/issues/88 ↗
- www.vulncheck.com/advisories/pybars3-through-0.9.7-code-injection-via-bracketed-path-segments ↗
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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.