CVE-2026-71805: LZ-litchi · Unrestricted File Upload
Source CVE Database V5
Public exploit available · CVSS 9.8 Critical.
Data as of 27 Oct 2026, 05:11 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- Exploitation
- Proof of concept is public or traded
- Automatable
- Attackers can reliably automate steps 1–4 of the kill chain
- Technical impact
- Total control over the software or total information disclosure
CISA SSVC assessment, 2026-09-10.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 9 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: evidence found.
CISA SSVC: proof of concept public
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
Timeline
CVE ID reserved
by MITRE Corporation
, 33 days before disclosure
CVE published
on cve.org
, t = 0
CISA SSVC assessment
proof of concept public
, 1 day after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA SSVC, the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
AI-suggested
Users should restrict access to the vulnerable endpoint, implement strict input validation and file type restrictions on uploads, and monitor for suspicious activity.
Description
CVE-2026-71805 is a critical vulnerability in LZ-litchi version 1.0.0 that allows unauthenticated remote attackers to upload arbitrary files and perform path traversal via the directory parameter in the file upload API endpoint. This can lead to arbitrary file write outside the intended storage directory, potentially resulting in full system compromise.