CVE-2026-54171 PUBLISHED

Excon: redact additional sensitive/risky headers when following redirects

Assigner: GitHub_M
Reserved: 11.06.2026 Published: 17.07.2026 Updated: 17.07.2026

Excon is usable, fast, simple HTTP 1.1 for Ruby. Prior to 1.5.0, Excon's RedirectFollower middleware failed to strip additional sensitive headers when following redirects and did not provide a custom list of headers to strip. This could cause inadvertent leakage of sensitive data when the initial request includes header information that is not intended for the new target. This issue is fixed in version 1.5.0.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS Score: 6.5

Product Status

Vendor excon
Product excon
Versions
  • Version < 1.5.0 is affected

References

Problem Types

  • CWE-201: Insertion of Sensitive Information Into Sent Data CWE