HIGHRubyGems →
Rack has quadratic complexity in Rack::Utils.select_best_encoding via wildcard Accept-Encoding header
Rack has quadratic complexity in Rack::Utils.select_best_encoding via wildcard Accept-Encoding header
Affected packages
- rack— before 2.2.23
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://github.com/rack/rack/security/advisories/GHSA-v569-hp3g-36wr
- https://nvd.nist.gov/vuln/detail/CVE-2026-34230
- https://github.com/rack/rack
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2026-34230.yml
Structured record: https://osv.dev/vulnerability/GHSA-v569-hp3g-36wr
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