CVE-2026-34783
CVE-2026-34783
8.1
HighPublished:
Last updated:
Source:security-advisories@github.com
Analyzed
Weakness (CWE)
CVSS Vector
v3.1- Attack Vector
- Network
- Attack Complexity
- Low
- Privileges Required
- None
- User Interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- High
Description
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.
References
security-advisories@github.com
https://github.com/MontFerret/ferret/commit/160ebad6bd50f153453e120f6d909f5b83322917security-advisories@github.com
https://github.com/MontFerret/ferret/security/advisories/GHSA-j6v5-g24h-vg4j134c704f-9b21-4f2e-91b3-4a467353bcc0
https://github.com/MontFerret/ferret/security/advisories/GHSA-j6v5-g24h-vg4j