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CVE-2026-3784

curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a server, even if the new request uses different credentials for the HTTP proxy. The proper behavior is to create or use a separate connection.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b066cd360c2ffb605dc933d3a8c040022221b91e62439b887f19e046e152ca34
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unknown","product":"RUGGEDCOM RST2428P","vendor":"Siemens","versions":[{"lessThan":"V4.0","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /containers/adp/2/affected/0

{"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:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /containers/cna/affected/0
cwe · 2 assertions

{"cweId":"CWE-305","description":"CWE-305 Authentication Bypass by Primary Weakness","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /containers/adp/1/problemTypes/0/descriptions/0

{"description":"CWE-305 Authentication Bypass by Primary Weakness","lang":"en"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

2 source assertions
{"defaultStatus":"unknown","product":"RUGGEDCOM RST2428P","vendor":"Siemens","versions":[{"lessThan":"V4.0","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /containers/adp/2/affected/0
{"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:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /containers/adp/1/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-305","description":"CWE-305 Authentication Bypass by Primary Weakness","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /containers/adp/1/problemTypes/0/descriptions/0
{"description":"CWE-305 Authentication Bypass by Primary Weakness","lang":"en"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/03/11/3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /containers/adp/0/references/0
{"url":"https://cert-portal.siemens.com/productcert/html/ssa-253495.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /containers/adp/2/references/0
{"name":"www","url":"https://curl.se/docs/CVE-2026-3784.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /containers/cna/references/1
{"name":"json","url":"https://curl.se/docs/CVE-2026-3784.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /containers/cna/references/0
{"name":"issue","url":"https://hackerone.com/reports/3584903"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4c394e36ec3ecc0679a9a1dd96cb5d0b1ced6c97a96e14c1993bc98ec3bdd14e · sha256:d05eb004e5e9a10f… · /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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