CVE-2026-42601

Name: CVE-2026-42601
Creator: NVD / NIST
Published: 2026-05-09T20:16:29.873+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2026-42601 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. ArchiveBox is an open source self-hosted web archiving system. In versions 0.8.6rc0 and prior, the /add/ endpoint (AddView in core/views.py) accepts a config JSON field that gets merged into the crawl config without validation. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

ArchiveBox is an open source self-hosted web archiving system. In versions 0.8.6rc0 and prior, the /add/ endpoint (AddView in core/views.py) accepts a config JSON field that gets merged into the crawl config without validation. This config is exported as environment variables when archive plugins run, allowing injection of arbitrary tool arguments to achieve RCE. At time of publication, there are no publicly available patches.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

9.3/10

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.40%

32.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-88

Affected Software

Vendor	Product	Versions	Update
Archivebox	Archivebox	< 0.8.6	—
Archivebox	Archivebox	0.8.6	Rc0

References

https://github.com/ArchiveBox/ArchiveBox/security/advisories/GHSA-3h23-7824-pj8rExploit, Vendor Advisory
https://github.com/ArchiveBox/ArchiveBox/security/advisories/GHSA-3h23-7824-pj8rExploit, Vendor Advisory

Timeline

Published: May 9, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-42601?

How severe is CVE-2026-42601?

CVE-2026-42601 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2026-42601?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-42601?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST