TrueLayer.Client SSRF when fetching payment or payment provider
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-918 and the CVSS impact.
Summary
TrueLayer.NET is the .Net client for TrueLayer. The vulnerability could potentially allow a malicious actor to gain control over the destination URL of the HttpClient used in the API classes. For applications using the SDK, requests to unexpected resources on local networks or to the internet could be made which could lead to information disclosure. The issue can be mitigated by having strict egress rules limiting the destinations to which requests can be made, and applying strict validation to any user input passed to the `truelayer-dotnet` library. Versions of TrueLayer.Client `v1.6.0` and later are not affected.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| TrueLayer | truelayer-dotnet | before 1.6.0 | 1.6.0 | Patch available | CNA |
| — | TrueLayer.Client (NuGet) | before 1.6.0 | 1.6.0 | Patch available | GHSA-67m4-qxp3-j6hh |
- truelayer-dotnet VendorTrueLayer Affected before 1.6.0 Fixed in 1.6.0 Patch available CNA
- TrueLayer.Client (NuGet) Vendor— Affected before 1.6.0 Fixed in 1.6.0 Patch available GHSA-67m4-qxp3-j6hh
Remediation
- Fix · CNA truelayer-dotnet (TrueLayer) Fixed in 1.6.0
- Fix · GHSA-67m4-qxp3-j6hh TrueLayer.Client (NuGet) Fixed in 1.6.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2024-23838
- 2026-10-03 Alias added: GHSA-67m4-qxp3-j6hh
References
Sources
- CVE-2024-23838 · CVE Program
- CVE-2024-23838 · NVD
- FIRST EPSS
- GHSA-67m4-qxp3-j6hh · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences