CVE-2026-42601

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.

CVSS v3.1 Score

9.8

CRITICAL

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

EPSS — Exploit Prediction

0.0006

Probability of exploitation

0.19%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-88 CWE-88

Affected Products

Vendor	Product	Versions
archivebox	archivebox	< 0.8.6
archivebox	archivebox	All

References

Advisories & Patches

https://github.com/ArchiveBox/ArchiveBox/security/advisories/GHSA-3h23-7824-pj8r https://github.com/ArchiveBox/ArchiveBox/security/advisories/GHSA-3h23-7824-pj8r

Exploits

https://github.com/ArchiveBox/ArchiveBox/security/advisories/GHSA-3h23-7824-pj8r https://github.com/ArchiveBox/ArchiveBox/security/advisories/GHSA-3h23-7824-pj8r

Frequently Asked Questions

What is CVE-2026-42601? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-42601? +

CVE-2026-42601 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0006, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-42601? +

CVE-2026-42601 affects products from archivebox, specifically: archivebox. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-42601? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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