CVE-2020-26312Public exploitNetwork attack vector

Arbitrary file access via chained symbolic links

Published May 14, 2024 · Updated Aug 4, 2024

Path traversal in Dotmesh 0 through 0.8.1 allows remote authenticated users to read or write files via a crafted tar archive. The untarFile routine validates each relative link target in isolation, so two accepted parent links resolve beyond the extraction root. Control of an archive is required; writes inherit the unpacking process's permissions, while reads also require access to extracted files.

CVSS severity8.1
High
EPSS probability0.44%
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 Dotmesh 0 through 0.8.1 allows remote authenticated users to read or write files via a crafted tar archive. The untarFile routine validates each relative link target in isolation, so two accepted parent links resolve beyond the extraction root. Control of an archive is required; writes inherit the unpacking process's permissions, while reads also require access to extracted files.

The record

CVE
CVE-2020-26312
Published
May 14, 2024
Updated
Aug 4, 2024
Vendor
Subtree
Product
Dotmesh
Classifications
CWE-125, CWE-787
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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=0 <=0.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Subtree · Dotmeshversion=0 <=0.8.1

Published CVSS scores

8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CWE-787Out-of-bounds Write

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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