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 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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.006 (46.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Archivebox — versions 0.8.6, <= 0.8.6rc0
Weakness classification (CWE)
References
- github.com/ArchiveBox/ArchiveBox/security/advisories/GHSA-3h23-7824-pj8r (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.