Vulnerability DatabaseCVE-2021-27293
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CVE-2021-27293
Published:July 12, 2021
Updated:May 17, 2026
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 responds with a malicious string, the client using RestSharp will be stuck processing it for an exceedingly long time. Thus the remote server can trigger Denial of Service.
Affected Packages
restsharp (NUGET):
Affected version(s) >=0.0.0-alpha.0 <106.11.8-alpha.0.13
Fix Suggestion:
Update to version 106.11.8-alpha.0.13
Related Resources (5)
https://restsharp.dev/
https://nvd.nist.gov/vuln/detail/CVE-2021-27293
https://github.com/restsharp/RestSharp/issues/1556
https://github.com/restsharp/RestSharp/commit/be39346784b68048b230790d15333574341143bc
https://restsharp.dev
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Incorrect Regular Expression
CWE-185
Incorrect Comparison
CWE-697
EPSS
Base Score:
0.44