CVE-2025-61921
1 advisory.
RubyGems/sinatra CVE-2025-61921: high 7.5, EPSS 0.50%
Sinatra is vulnerable to ReDoS through ETag header value generation
Action: Upgrade sinatra to 4.2.0 or later.
bundle update sinatraAffected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 4.2.0 | - |
Fixed versions
| 4.2.0 |
Sources
- osv: GHSA-mr3q-g2mv-mr4q
- nvd: CVE-2025-61921
- https://github.com/sinatra/sinatra/security/advisories/GHSA-mr3q-g2mv-mr4q
- https://github.com/sinatra/sinatra/issues/2120
- https://github.com/sinatra/sinatra/pull/1823
- https://github.com/sinatra/sinatra/pull/2121
- https://github.com/sinatra/sinatra/commit/3fe8c38dc405586f7ad8f2ac748aa53e9c3615bd
- https://github.com/sinatra/sinatra/commit/8ff496bd4877520599e1479d6efead39304edceb
- https://bugs.ruby-lang.org/issues/19104
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/sinatra/CVE-2025-61921.yml
- https://github.com/sinatra/sinatra
CVE-2025-61921 · published · modified · JSON