CVE-2026-22871Network attack vector

File overwrite via duplicated ZIP member path

Published Jan 13, 2026 · Updated Jan 13, 2026

Path traversal in Datadog GuardDog before 2.7.1 allows remote attackers to overwrite arbitrary files via a malicious PyPI package. The safe_extract() function passes os.path.join(target_directory, member) as ZipFile.extract()'s destination, causing the member name to be appended twice and defeating path sanitization. Exploitation requires GuardDog to scan the crafted archive; writable startup or service files can convert the overwrite into code execution under GuardDog's privileges.

CVSS severity8.7
High
EPSS probability1.07%
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 Datadog GuardDog before 2.7.1 allows remote attackers to overwrite arbitrary files via a malicious PyPI package. The safe_extract() function passes os.path.join(target_directory, member) as ZipFile.extract()'s destination, causing the member name to be appended twice and defeating path sanitization. Exploitation requires GuardDog to scan the crafted archive; writable startup or service files can convert the overwrite into code execution under GuardDog's privileges.

The record

CVE
CVE-2026-22871
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
Datadog
Product
GuardDog
Classifications
CWE-22, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 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=< 2.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Datadog · GuardDogversion=< 2.7.1

Published CVSS scores

8.7GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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