RestSharp is a lightweight HTTP client library for .NET that is widely embedded in applications across enterprise and consumer software, where its vulnerability profile centers on the handling of HTTP headers and data validation. The observed weakness classes—including CRLF injection, broader injection flaws, and incorrect comparison logic—reflect the parsing and sanitization challenges inherent to a request-building abstraction layer that mediates between application code and network transport. Current exploitation activity and exposure counts are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Restsharp over time
Signals from CVEs in this vendor scope (2 CVEs).
2 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2021-27293HIGH RestSharp < 106.11.8-alpha.0.13 uses a regular expression which is vulnerable to Regular Expression Denial of Service (ReDoS) when converting strings into DateTimes. If a server re | Jul 12, 2021 | 7.5 | 25 | NO | NO |
CVE-2024-45302HIGH RestSharp is a Simple REST and HTTP API Client for .NET. The second argument to `RestRequest.AddHeader` (the header value) is vulnerable to CRLF injection. The same applies to `Res | Aug 29, 2024 | 7.8 | 22 | NO | NO |
Signals from CVEs in this vendor scope (2 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Restsharp.
Media articles that mention a CVE ID that affects a product developed by Restsharp — matched by CVE ID, not by vendor name.