Out-of-Bounds Read Vulnerability in TrailDB's TOC Validation Function
CVE-2026-19955

5.1MEDIUM

Key Information:

Vendor

TrailDB

Status
Traildb
Vendor
CVE Published:
16 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-19955?

A vulnerability in TrailDB version 0.6 affects the TOC Validation component, specifically the tdb_open function located in /src/tdb.c. Exploitation of this issue allows for out-of-bounds read operations, which can be executed remotely. Although early notifications were sent to the project maintainers via an issue report, a patch has yet to be made available. The details of the vulnerability are now publicly accessible, heightening the risk of potential exploitation.

Affected Version(s)

TrailDB 0.6

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-19955 - Proof of Concept

References

https://vuldb.com/vuln/391111
vdb-entrytechnical-description
https://vuldb.com/vuln/391111/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-19955
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Fantasy_2026 (VulDB User)
VulDB CNA Team
.