{"answers":{"affected":"2 open source packages ship an affected version, including RestSharp. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-27293 in the wild and no public exploit code.","fix":"Upgrade RestSharp to 106.11.8-alpha.0.13 or later.","what":"CVE-2021-27293 is a high-severity denial of service vulnerability in n/a, published on 12 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-27293 and fix it if it is affected.\n\nWhat it is: CVE-2021-27293 is a high-severity denial of service vulnerability in n/a, published on 12 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-27293 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- RestSharp (NuGet): affected all versions; fixed in 106.11.8-alpha.0.13\n- RestSharp (NuGet): affected all versions; fixed in 106.11.8-alpha.0.13\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2021-27293/ (Markdown: https://insights.sbomify.com/CVE-2021-27293/index.md)","id":"CVE-2021-27293","markdown":"https://insights.sbomify.com/CVE-2021-27293/index.md","name":"CVE-2021-27293","record":{"aliases":["ECHO-ae7e-bb92-3687","GHSA-9pq7-rcxv-47vq"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"RestSharp HTTP client","requires_auth":"none","summary":"A malicious server response can cause the RestSharp client to hang indefinitely due to a ReDoS vulnerability during date parsing.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"restsharp","vendor":"restsharp"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-697","name":"Incorrect Comparison"}],"description":"RestSharp \u003c 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.","ecosystems":["NuGet"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Incorrect Regular Expression in RestSharp","id":"CVE-2021-27293","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":2,"n_references":2,"next":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2021-27294"},"packages":[{"ecosystem":"NuGet","fixed":["106.11.8-alpha.0.13"],"introduced":["0"],"last_affected":[],"package":"RestSharp","purl":null,"source":"GHSA-9pq7-rcxv-47vq"},{"ecosystem":"NuGet","fixed":["106.11.8-alpha.0.13"],"introduced":["0"],"last_affected":[],"package":"RestSharp","purl":"pkg:nuget/RestSharp","source":"GHSA-9pq7-rcxv-47vq"}],"prev":{"headline":"Regular Expression Denial of Service (ReDoS) in ua-parser-js","id":"CVE-2021-27292"},"products":["n/a"],"published":"2021-07-12","related":[{"cvss_score":6.1,"headline":"CRLF Injection in RestSharp's `RestRequest.AddHeader` method","id":"CVE-2024-45302","kev_date_added":null,"published":"2024-08-29"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"A malicious server response can cause the RestSharp client to hang indefinitely due to a ReDoS vulnerability during date parsing.","url":"https://insights.sbomify.com/CVE-2021-27293/"}