CVE-2026-34783: MontFerret ferret · Path Traversal
Affects MontFerret ferretSource CVE Database V5
Not known to be exploited · CVSS 8.1 High : upgrade to 2.0.0-alpha.4 soon.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 43% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2.0.0-alpha.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 6 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade MontFerret ferret to 2.0.0-alpha.4.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| MontFerretferret | Affected
| Fixed in
|
GitHubmontferret/ferretpkg:github/montferret/ferretOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade MontFerret ferret to version 2.0.0-alpha.4 or later, where this path traversal vulnerability is fixed. Until upgraded, avoid scraping untrusted websites that may return filenames with '../' sequences or sanitize filenames before use to prevent path traversal.
Description
CVE-2026-34783 is a path traversal vulnerability in MontFerret's ferret product prior to version 2.0.0-alpha.4. The flaw exists in the IO::FS::WRITE standard library function, allowing a malicious website to cause Ferret to write arbitrary files to the host filesystem by using crafted filenames containing '.. /' sequences. This can enable attackers to control both the destination path and file content, potentially leading to remote code execution through mechanisms like cron jobs, SSH authorized_keys, shell profiles, or web shells. The vulnerability is fixed in version 2.0.0-alpha.