What is CVE-2026-42601?

CVE-2026-42601 is a critical-severity vulnerability in Archivebox, classified under Argument Injection. CVSS score: 9.8/10. Published 2026-05-09.

How severe is CVE-2026-42601?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Archivebox

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…

EPSS: 0.001 (19.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Archivebox — versions 0.8.6, <= 0.8.6rc0

Weakness classification (CWE)

CWE-88 — Argument Injection

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-42601?: CVE-2026-42601 is a critical-severity vulnerability in Archivebox, classified under Argument Injection. CVSS score: 9.8/10. Published 2026-05-09.
How severe is CVE-2026-42601?: Critical severity. CVSS v3 base score is 9.8 out of 10.