CVE-2026-42601Public exploitNetwork attack vector

Remote code execution via crawl configuration injection

Published May 9, 2026 · Updated May 9, 2026

Argument injection in ArchiveBox 0.8.6rc0 and earlier allows remote attackers to execute code through crafted /add/ configuration. AddView merges config JSON into crawl settings without validation; plugin hooks export the values as environment variables, and yt-dlp appends YTDLP_ARGS_EXTRA to its command. Unauthenticated access requires PUBLIC_ADD_VIEW=True; otherwise endpoint access requires an authenticated user, and successful exploitation runs code on the server.

CVSS severity9.3
Critical
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Argument injection in ArchiveBox 0.8.6rc0 and earlier allows remote attackers to execute code through crafted /add/ configuration. AddView merges config JSON into crawl settings without validation; plugin hooks export the values as environment variables, and yt-dlp appends YTDLP_ARGS_EXTRA to its command. Unauthenticated access requires PUBLIC_ADD_VIEW=True; otherwise endpoint access requires an authenticated user, and successful exploitation runs code on the server.

The record

CVE
CVE-2026-42601
Published
May 9, 2026
Updated
May 9, 2026
Vendor
ArchiveBox
Product
ArchiveBox
Classifications
CWE-88, T1190, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 9, 2026CVE publishedPublication date reported by the CVE source.
  2. May 9, 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=<= 0.8.6rc0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ArchiveBox · ArchiveBoxversion=<= 0.8.6rc0

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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.

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 exploitPublished

Weakness, pattern, technique

CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
T1190Exploit Public-Facing Application
T1059.004Command and Scripting Interpreter: Unix Shell

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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