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CVE-2026-54171

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e7fa43974fd91390e59bb5a941f8c8ec31f1d18c03e96f84f9bf922d539d3c0b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"excon","vendor":"excon","versions":[{"status":"affected","version":"< 1.5.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4a2c1826238db8417bae0e9aad14cca14332aabb889de617f04d122f5fac18fb · sha256:c27b27086b60e403… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4a2c1826238db8417bae0e9aad14cca14332aabb889de617f04d122f5fac18fb · sha256:c27b27086b60e403… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-201","description":"CWE-201: Insertion of Sensitive Information Into Sent Data","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4a2c1826238db8417bae0e9aad14cca14332aabb889de617f04d122f5fac18fb · sha256:c27b27086b60e403… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/excon/excon/commit/ea89a35308a12f4b791b6c50f2cbd33f94889fa3","tags":["x_refsource_MISC"],"url":"https://github.com/excon/excon/commit/ea89a35308a12f4b791b6c50f2cbd33f94889fa3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4a2c1826238db8417bae0e9aad14cca14332aabb889de617f04d122f5fac18fb · sha256:c27b27086b60e403… · /containers/cna/references/2
{"name":"https://github.com/excon/excon/pull/901","tags":["x_refsource_MISC"],"url":"https://github.com/excon/excon/pull/901"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4a2c1826238db8417bae0e9aad14cca14332aabb889de617f04d122f5fac18fb · sha256:c27b27086b60e403… · /containers/cna/references/1
{"name":"https://github.com/excon/excon/security/advisories/GHSA-48rx-c7pg-q66r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/excon/excon/security/advisories/GHSA-48rx-c7pg-q66r"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4a2c1826238db8417bae0e9aad14cca14332aabb889de617f04d122f5fac18fb · sha256:c27b27086b60e403… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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