Medium severity5.5NVD Advisory· Published Apr 2, 2026· Updated Apr 3, 2026
CVE-2026-34730
CVE-2026-34730
Description
Copier is a library and CLI app for rendering project templates. Prior to version 9.14.1, Copier's _external_data feature allows a template to load YAML files using template-controlled paths. If untrusted templates are in scope, a malicious template can read attacker-chosen YAML-parseable local files that are accessible to the user running Copier and expose their contents in rendered output. This issue has been patched in version 9.14.1.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
copierPyPI | < 9.14.1 | 9.14.1 |
Affected products
2Patches
Vulnerability mechanics
References
5- github.com/copier-org/copier/commit/5413062eb17b73dc885f5e645cdc161e69ef641bnvdPatchWEB
- github.com/copier-org/copier/security/advisories/GHSA-hgjq-p8cr-gg4hnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-hgjq-p8cr-gg4hghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-34730ghsaADVISORY
- github.com/copier-org/copier/releases/tag/v9.14.1nvdRelease NotesWEB
News mentions
0No linked articles in our index yet.