CVE-2026-92791— Uber Kraken through 0.1.29 Path Traversal via tag parameter
Quick assessment
Affected
uber kraken
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Uber Kraken through 0.1.29 fails to validate the tag parameter in the /tags/{tag} endpoint, allowing unauthenticated attackers to traverse outside the configured storage root. Attackers can use percent-encoded parent-directory segments in the tag parameter to
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I. Basic Information for CVE-2026-92791
Vulnerability Information
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Vulnerability Title
Uber Kraken through 0.1.29 Path Traversal via tag parameter
Source: CVE Program / CVE List V5
Vulnerability Description
Uber Kraken through 0.1.29 fails to validate the tag parameter in the /tags/{tag} endpoint, allowing unauthenticated attackers to traverse outside the configured storage root. Attackers can use percent-encoded parent-directory segments in the tag parameter to read arbitrary files accessible to the testfs backend process.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-92791
| # | POC Description | Source Link | Shenlong Link |
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Other References for CVE-2026-92791 (5)
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kraken/build-index/tagserver/server.go at v0.1.27 · uber/kraken · GitHub technical-description
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kraken/lib/backend/testfs/server.go at v0.1.27 · uber/kraken · GitHub technical-description
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kraken/lib/backend/namepath/pather.go at v0.1.27 · uber/kraken · GitHub technical-description
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Uber Kraken through 0.1.29 Path Traversal via tag parameter | Advisories | VulnCheck third-party-advisory
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Same weakness: CWE-22
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V. Comments for CVE-2026-92791
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