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Early warnings
SZB-1282b8c6a0

EUVD lists code injection in pybars3 through 0.9.7

Status
Unverified: only social posts report this so far
Kind
Vulnerability
Vendor
wbond
Product
pybars3
First seen

Summary

The EUVD entry EUVD-2026-114121 (CVSS v3.1 score 9.2) describes a code injection vulnerability in pybars3's compiler. According to the entry, template authors can execute Python code by using unescaped bracketed path segments in Handlebars templates.

If you use wbond

Upgrade pybars3 past version 0.9.7 once a fixed release is confirmed

Render only trusted templates until patched

Review template sources for unescaped bracketed path segments

What the sources say 1

· Mastodon: “pybars3 through 0.9.7 contains a code injection vulnerability in pybars/_ https:// compiler.py that allows template authors to execute Python code via unescaped bracketed path segments.” Source