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CVE-2025-61921

Sinatra has ReDoS vulnerability in ETag header value generation PUBLISHED

Description (CNA)

Sinatra is a domain-specific language for creating web applications in Ruby. In versions prior to 4.2.0, there is a denial of service vulnerability in the `If-Match` and `If-None-Match` header parsing component of Sinatra, if the `etag` method is used when constructing the response. Carefully crafted input can cause `If-Match` and `If-None-Match` header parsing in Sinatra to take an unexpected amount of time, possibly resulting in a denial of service attack vector. This header is typically involved in generating the `ETag` header value. Any applications that use the `etag` method when generating a response are impacted. Version 4.2.0 fixes the issue.

Affected (CNA)

Vendor / productVersions
sinatra / sinatraaffected < 4.2.0

CWE

CWE-1333

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.