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CVE-2026-126949 Zipline through 4.4.0 Path Traversal File Overwrite via PATCH /api/user/files/:id

7.0 highEPSS 0.6%

High (7.0) in diced zipline. EPSS 0.6% estimated probability of exploitation activity in the next 30 days.

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Zipline through 4.4.0 contains a path traversal vulnerability in the PATCH /api/user/files/:id rename endpoint that allows authenticated users to overwrite existing uploads by supplying unsanitized names. Attackers can submit names like ../uploads/victim.txt that bypass the raw-string database uniqueness check but normalize via path.join(), causing fs.rename() to replace other files' contents.

Severity

CVSS 4.0

7.0 high
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
EPSS
0.6% estimated probability of exploitation activity in the next 30 days; 50th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-22 Improper Limitation of a Pathname to a Restricted Directory (Path traversal)
OWASP Top 10
A01:2025 Broken Access Control
Published
Modified
Assigned by
VulnCheck (CNA)
NVD analysis
Deferred: the NVD does not plan to analyze it
Record from
the NVD, synced

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Affected

Versions

From the CNA's record in the CVE List.

ProductAffected
diced ziplinethrough 4.4.0

Attack patterns (CAPEC)

  • CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic Likelihood: High · Severity: High
  • CAPEC-76 Manipulating Web Input to File System Calls Likelihood: High · Severity: Very High
  • CAPEC-78 Using Escaped Slashes in Alternate Encoding Likelihood: High · Severity: High
  • CAPEC-79 Using Slashes in Alternate Encoding Likelihood: High · Severity: High
  • CAPEC-126 Path Traversal Likelihood: High · Severity: Very High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

History

  1. The NVD deferred its analysis

Changes since this site first stored the record. The same for every record: /api/public/changes.

References

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