CVE-2026-54171Medium· 6.5▾ SunlitA flaw was found in Excon, a Ruby HTTP client library. The RedirectFollower middleware, responsible for handling redirects, failed to remove sensitive header information when a request was redirected to a new target. This oversight could l…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 35.8 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 18.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.4%
Last analysed / modified upstream
A flaw was found in Excon, a Ruby HTTP client library. The RedirectFollower middleware, responsible for handling redirects, failed to remove sensitive header information when a request was redirected to a new target. This oversight could lead to the unintended exposure of confidential data to an unauthorized destination, potentially compromising sensitive information.
excon: Excon: Information disclosure via unstripped sensitive headers during redirects — rated Moderate by Red Hat. Released 2026-07-17, updated 2026-09-07.
Affected:
No fix planned:
Fix deferred
Workarounds / mitigations:
Affected packages:
excon < 1.5.0Patched in:
excon 1.5.0Connected by shared product, vendor, weakness, or advisory.
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