CVE catalog

CVE-2026-34783

Ferret is a declarative system for working with web data. Prior to 2.0.0-alpha.4, a path traversal vulnerability in Ferret's IO::FS::WRITE standard library function allows a malicious website to write

[CVE catalog]

Severity
High · CVSS 8.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Published
Source
[NVD] · [CVE record]
EPSS
0.51% · Oct 25, 2026

Ferret is a declarative system for working with web data. Prior to 2.0.0-alpha.4, a path traversal vulnerability in Ferret's IO::FS::WRITE standard library function allows a malicious website to write arbitrary files to the filesystem of the machine running Ferret. When an operator scrapes a website that returns filenames containing ../ sequences, and uses those filenames to construct output paths (a standard scraping pattern), the attacker controls both the destination path and the file content. This can lead to remote code execution via cron jobs, SSH authorized_keys, shell profiles, or web shells. This vulnerability is fixed in 2.0.0-alpha.4.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
CpeferretNot reported2.0.0fixed
CpeferretNot reportedNot reportedunknown
Gogithub.com/MontFerret/ferret/v2Not reported2.0.0-alpha.4fixed
CpeferretNot reportedNot reportedunknown

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
CpeferretcpeNot reported2.0.0Not reportedNot reportedNot reported
Gogithub.com/MontFerret/ferret/v2GoNot reported2.0.0-alpha.4Not reportedNot reportedNot reported

OpenFactory catalog packages

No matching packages in this catalog.

Observed:

References

[FIRST EPSS] · [Go Vulnerability Database] · [National Vulnerability Database (NVD)]