Is rack affected by CVE-2013-0263?

RubyGems rack is affected in >=1.5.0 =1.4.0 =1.3.0 =1.2.0 =1.1.0 <1.1.6.

Is CVE-2013-0263 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 5.3%.

medium

CVE-2013-0263

Q: Is CVE-2013-0263 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 5.3%.

RubyGems · rack

Summary

Rack arbitrary code execution via timing attack

Severity: medium
EPSS: 5.3% (p92)
Also known as: GHSA-xc85-32mf-xpv8
Published: 2022-05-05

References

https://nvd.nist.gov/vuln/detail/CVE-2013-0263
https://github.com/rack/rack/commit/0cd7e9aa397f8ebb3b8481d67dbac8b4863a7f07
https://github.com/rack/rack/commit/9a81b961457805f6d1a5c275d053068440421e11

Related advisories

CVE-2022-30123 — critical · RubyGems/rack
CVE-2026-34829 — high · RubyGems/rack
CVE-2026-34230 — high · RubyGems/rack
CVE-2026-34827 — high · RubyGems/rack
CVE-2026-34785 — high · RubyGems/rack
CVE-2026-22860 — high · RubyGems/rack
CVE-2025-61919 — high · RubyGems/rack
CVE-2025-61772 — high · RubyGems/rack

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.