CVE-2021-27293

moderate-risk

Published 2021-07-12

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.

Do I need to act?

0.44% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (9)

Restsharp

Affected Vendors

Restsharp

References (4)

Exploit https://github.com/restsharp/RestSharp/issues/1556

Product https://restsharp.dev/

Exploit https://github.com/restsharp/RestSharp/issues/1556

Product https://restsharp.dev/

/ 100

moderate-risk

Severity 26/34 · High

Exploitability 2/34 · Minimal

Exposure 15/34 · Moderate