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CVE-2026-3783

When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a redirect to a second URL, curl could leak that token to the second hostname under some circumstances. If the hostname that the first request is redirected to has information in the used .netrc file, with either of the `machine` or `default` keywords, curl would pass on the bearer token set for the first host also to the second one.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ebe7715e926969435d9780c0d00a2a1dc37712919f1f2ff50bcb9707829402b2
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-522","description":"CWE-522 Insufficiently Protected Credentials","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:908c3bb069c54b47f3bfba8af52d3395e8af0f1c2983d69644369e006582daff · sha256:bcc3776a29ac3408… · /containers/adp/1/problemTypes/0/descriptions/0

{"description":"CWE-522 Insufficiently Protected Credentials","lang":"en"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:908c3bb069c54b47f3bfba8af52d3395e8af0f1c2983d69644369e006582daff · sha256:bcc3776a29ac3408… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"curl","vendor":"curl","versions":[{"lessThanOrEqual":"8.18.0","status":"affected","version":"8.18.0","versionType":"semver"},{"lessThanOrEqual":"8.17.0","status":"affected","version":"8.17.0","versionType":"semver"},{"lessThanOrEqual":"8.16.0","status":"affected","version":"8.16.0","versionType":"semver"},{"lessThanOrEqual":"8.15.0","status":"affected","version":"8.15.0","versionType":"semver"},{"lessThanOrEqual":"8.14.1","status":"affected","version":"8.14.1","versionType":"semver"},{"lessThanOrEqual":"8.14.0","status":"affected","version":"8.14.0","ve…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:908c3bb069c54b47f3bfba8af52d3395e8af0f1c2983d69644369e006582daff · sha256:bcc3776a29ac3408… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:908c3bb069c54b47f3bfba8af52d3395e8af0f1c2983d69644369e006582daff · sha256:bcc3776a29ac3408… · /containers/adp/1/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-522","description":"CWE-522 Insufficiently Protected Credentials","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:908c3bb069c54b47f3bfba8af52d3395e8af0f1c2983d69644369e006582daff · sha256:bcc3776a29ac3408… · /containers/adp/1/problemTypes/0/descriptions/0
{"description":"CWE-522 Insufficiently Protected Credentials","lang":"en"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:908c3bb069c54b47f3bfba8af52d3395e8af0f1c2983d69644369e006582daff · sha256:bcc3776a29ac3408… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/03/11/2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:908c3bb069c54b47f3bfba8af52d3395e8af0f1c2983d69644369e006582daff · sha256:bcc3776a29ac3408… · /containers/adp/0/references/0
{"name":"www","url":"https://curl.se/docs/CVE-2026-3783.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:908c3bb069c54b47f3bfba8af52d3395e8af0f1c2983d69644369e006582daff · sha256:bcc3776a29ac3408… · /containers/cna/references/1
{"name":"json","url":"https://curl.se/docs/CVE-2026-3783.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:908c3bb069c54b47f3bfba8af52d3395e8af0f1c2983d69644369e006582daff · sha256:bcc3776a29ac3408… · /containers/cna/references/0
{"name":"issue","url":"https://hackerone.com/reports/3583983"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:908c3bb069c54b47f3bfba8af52d3395e8af0f1c2983d69644369e006582daff · sha256:bcc3776a29ac3408… · /containers/cna/references/2

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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