Excon does not redact additional sensitive/risky headers when following redirects

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0043, the 37th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 15:16 UTC First seen by agentprime
2. 31 Oct 2026, 15:16 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-48rx-c7pg-q66r
• OSV: GHSA-48rx-c7pg-q66r
• github.com/excon/excon/security/advisories/GHSA-48rx-c7pg-q66r
• nvd.nist.gov/vuln/detail/CVE-2026-54171
• github.com/excon/excon/pull/901
• github.com/excon/excon/commit/ea89a35308a12f4b791b6c50f2cbd33f94889fa3
• github.com/excon/excon
• github.com/rubysec/ruby-advisory-db/blob/master/gems/excon/CVE-2026-54171.yml
• www.cve.org/CVERecord?id=CVE-2026-54171

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.