CVE-2026-34726Disclosure(copier-org / copier)

LOWCVSS 4.4 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Copier is a library and CLI app for rendering project templates. Prior to version 9.14.1, Copier's _subdirectory setting is documented as the subdirectory to use as the template root. However, the current implementation accepts parent-directory traversal such as .. and uses it directly when selecting the template root. As a result, a template can escape its own directory and make Copier render files from the parent directory without --UNSAFE. This issue has been patched in version 9.14.1.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-22

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • copier

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Vendors
Products
copier

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-04-03: 204-03
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-34726 Copier is a library and CLI app for rendering project templates. Prior to version 9.14.1, Copier's _subdirectory setting is documented as the subdirectory to use as t… https://www.cve.org/CVERecord?id=CVE-2026-34726

    Post summary

    The snippet identifies CVE‑2026‑34726 affecting the Copier library, noting a documented _subdirectory setting issue, but does not provide PoC, exploit, or patch details.

    00010186
    56.9K followersView on X
  • Infoflowcloud@infoflowcloud
    General

    🚨*CVE* CVE-2026-34726 Copier is a library and CLI app for rendering project templates. Prior to version 9.14.1, Copier's _subdirectory setting is documented as the subdirectory to use as t… https://www.cve.org/CVERecord?id=CVE-2026-34726 ----- Traducción: CVE-2026-34726 Cop… http://infoflow.cloud`

    Post summary

    The post lists CVE‑2026‑34726 for the Copier library but offers only minimal context without details on exploitation, patching, or technical specifics.

    0000034
    65 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appcopier-orgcopier-python-

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