Trudesk: Missing authentication for ticket attachments via /uploads
Summary
Trudesk through version 1.2.11 does not enforce authentication for files under the /uploads path. Because the public directory is served before the authenticated upload route, an unauthenticated remote attacker who knows or guesses a ticket ID and filename can download confidential ticket attachments. A researcher write-up describes the request steps and predictable file paths, so exploitation is technically easy.
Affected
- Trudesk versions 0 to and including 1.2.11 (per the CVE record)
Fixed in
- Unknown. No fixed version or vendor advisory was found.
Workaround
- Deny unauthenticated requests to the upload path at the reverse proxy or web server, or move the upload directory out of the public web root (test first).
- Restrict access to the Trudesk instance via VPN, IP allowlist or SSO gateway until a fix is confirmed.
- Review web server logs for requests to /uploads/ from unknown sources.
Exploitation
- A public proof of concept (researcher write-up) exists.
- Not known to be exploited in the wild (no KEV entry).
- CISA SSVC lists exploitation as PoC and automatable as no.
Our recommendation
- Check whether internet-facing Trudesk instances run version 1.2.11 or earlier.
- Apply the mitigations above immediately, especially for internet-facing instances.
- Review logs for suspicious /uploads/ requests and treat hits as a potential data disclosure incident.
- Assess sensitive attachments already stored and rotate any credentials they contain.
- Verify afterwards that attachments are no longer retrievable without a session.
- Monitor the upstream project for a fixed release and update promptly. Consider data protection obligations (nDSG/FADP) if personal data was exposed.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- VulnCheck advisory www.vulncheck.com
- GitHub issue 754 (polonel/trudesk) github.com
- Researcher security report (HackMD) hackmd.io
- Zinea blog post zineausa.com
- VulDB entry vuldb.com
- HOL Guard CVE entry hol.org
- Vulners CVE entry vulners.com
- OpenCVE entry app.opencve.io
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 15:16.
Original description (NVD)
Trudesk through 1.2.11 contains a missing authentication vulnerability that allows unauthenticated attackers to download private ticket attachments under /uploads. Because express.static serves the public/ directory before the hasAuth-guarded /uploads mount, attackers who know or guess a ticket ObjectId and filename can retrieve confidential attachments.
NVD references (5)
- https://github.com/polonel/trudesk/issues/754
- https://hackmd.io/@leediay/multiple-vuln-trudesk-1211
- https://www.vulncheck.com/advisories/trudesk-through-1.2.11-missing-authentication-for-ticket-attachments-via…
- https://zineausa.com/blog/2026/10/trudesk-1-2-11-unauthorized-ticket-access-idor/
- https://hackmd.io/@leediay/multiple-vuln-trudesk-1211
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
Affected? We can help.
We check whether your systems are affected, install updates and close the gap – continuously with the System Health Checker if you wish.