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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-34726

20
FAUCET Score

CVE-2026-34726 is a directory traversal vulnerability found in copier_org copier versions prior to 9.14.1. This flaw allows a malicious template to escape its intended directory and render files from parent directories by exploiting the `_subdirectory` setting, which incorrectly processes parent-directory traversal sequences. Rated Medium with a CVSS score of 4.4 (AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N), it requires local access and user interaction, leading to low confidentiality and integrity impacts. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 9.14.1CPE matchmatch criteria
cpe:2.3:a:copier-org:copier:*:*:*:*:*:python:*:*

CVSS Data

CVSS version used by this source: 3.1

4.4MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 38th percentile among its peer group of 5,760 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: copierFixed in: 9.14.1

Vendor Advisories (1)

pipGHSA-85v3-4m8g-hrh6medium

Copier `_subdirectory` allows template root escape via parent-directory traversal

Apr 1, 2026

References

github.com / copier-org/copier/commit/cb80a3ffc9c3787de3ed837e04ca29a0ff8ca3df
Patch
github.com / copier-org/copier/releases/tag/v9.14.1
Release Notes
github.com / copier-org/copier/security/advisories/GHSA-85v3-4m8g-hrh6
ExploitVendor Advisory