Vulnerability DatabaseCVE-2026-119716
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CVE-2026-119716
Published:October 30, 2026
Updated:November 04, 2026
pybars3 through 0.9.7 and pybars4 through 0.9.13 contain 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.
Related Resources (9)
https://github.com/up9inc/pybars4
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119716.json
https://github.com/wbond/pybars3
https://github.com/up9inc/pybars4/blob/0.9.13/pybars/_compiler.py#L153-L154
https://github.com/vladko312/advisories/blob/702e98db9642ece70d9e2150076d8014ffec2db3/pybars3.md
https://github.com/wbond/pybars3/issues/88
https://nvd.nist.gov/vuln/detail/CVE-2026-119716
https://github.com/wbond/pybars3/blob/0.9.7/pybars/_compiler.py#L159-L160
https://www.vulncheck.com/advisories/pybars3-through-0.9.7-code-injection-via-bracketed-path-segments
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CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Control of Generation of Code
CWE-94
EPSS
Base Score:
0.46