CVE-2026-24686Public exploit

Arbitrary file write via repository-name path traversal

Published Jan 27, 2026 · Updated Jan 27, 2026

Path traversal in go-tuf 2.0.0 through 2.4.0 allows attackers to write root metadata outside the local cache directory. MultiRepoClient.initTUFClients joins an unvalidated repoName from a TAP 4 map file to LocalMetadataDir, allowing traversal components to escape the cache base. Exploitation requires attacker-controlled map data, enabled local caching, and a cache path writable by the process; resulting writes remain limited by that process's filesystem permissions.

CVSS severity4.7
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in go-tuf 2.0.0 through 2.4.0 allows attackers to write root metadata outside the local cache directory. MultiRepoClient.initTUFClients joins an unvalidated repoName from a TAP 4 map file to LocalMetadataDir, allowing traversal components to escape the cache base. Exploitation requires attacker-controlled map data, enabled local caching, and a cache path writable by the process; resulting writes remain limited by that process's filesystem permissions.

The record

CVE
CVE-2026-24686
Published
Jan 27, 2026
Updated
Jan 27, 2026
Vendor
The Update Framework
Product
go-tuf
Classifications
CWE-22, T1565.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 2.0.0, < 2.4.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Update Framework · go-tufversion=>= 2.0.0, < 2.4.1

Published CVSS scores

4.7GitHubCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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