# CVE-2026-115740: Trellix DLP on-prem extensions server-side request forgery

Source: https://junglewise.ai/threats/cve-2026-115740-server-side-request-forgery-vulnerability-exists-in-the-dlp-on  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-05. Updated: 2026-11-05  
License: CC BY 4.0 with a link back

CVE-2026-115740 · Severity: info · Published 2026-11-05

Trellix DLP on-prem extensions is a data loss prevention system that monitors and controls file access. A server-side request forgery vulnerability allows an attacker to force the system to connect to attacker-controlled hosts by manipulating file path parameters, potentially leaking Windows authentication credentials through SMB.

Technologies: [Trellix DLP on-prem extensions](https://junglewise.ai/threats/technologies/dlp-on-prem-extensions). Vendors: [Trellix](https://junglewise.ai/threats/vendors/trellix).

## Quick answers

**Is CVE-2026-115740 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-115740 being exploited in the wild.

**How severe is CVE-2026-115740?** Informational severity, published 5 November 2026.

**Which products and versions are affected?** Trellix DLP on-prem extensions 11.13.1 and earlier.

**Is there a fix for CVE-2026-115740?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-115740 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-115740?** Check whether you run Trellix DLP on-prem extensions at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A server-side request forgery exists in the OpenEventEvidenceFile.do endpoint where the file Prefix parameter fails to validate UNC paths, allowing arbitrary paths to be supplied. When the vulnerable code attempts to open the specified path, Windows initiates SMB authentication to an attacker-controlled hostname, exposing credential hashes.

## Affected products

- Trellix DLP on-prem extensions 11.13.1 and earlier

## Timeline

- 2026-11-05: disclosed

## References

- [https://support.trellix.com/s/article/000015949](https://support.trellix.com/s/article/000015949)

## Related threats

- [Trellix DLP on-prem extensions hard-coded cryptographic key](https://junglewise.ai/threats/cve-2026-115739-hard-coded-cryptographic-key-vulnerability-exists-in-the-dlp-on)
- [Trellix DLP on-prem extensions SQL injection](https://junglewise.ai/threats/cve-2026-115738-sql-injection-vulnerability-in-dlp-on-prem-extensions-version-11)