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CVE-2026-47076

Interpretation Conflict vulnerability in benoitc hackney allows Server Side Request Forgery. hackney_url:normalize/2 URL-decodes the host component after the URL has been parsed into a #hackney_url{} record. OTP's uri_string:parse/1 and inet:parse_address/1 do not decode percent-escapes in the host, so a URL such as http://%31%32%37%2E%30%2E%30%2E%31/ is seen by a caller's allowlist validator with host %31%32%37%2E%30%2E%30%2E%31 (not an IP address), which passes the allowlist check. hackney's n
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:35de53e883384e927fbcefaaa978196faa8d146cff77e3882bf542b0f2fa4eea
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

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["hackney_url"],"packageName":"benoitc/hackney","packageURL":"pkg:github/benoitc/hackney","product":"hackney","programFiles":["src/hackney_url.erl"],"programRoutines":[{"name":"hackney_url:normalize/2"}],"repo":"https://github.com/benoitc/hackney","vendor":"benoitc","versions":[{"lessThan":"452620a92ec1da2e6b4862a049a2a4f04b42068f","status":"affected","version":"4d725507588942fd00efca15b86da3273656510a","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /containers/cna/affected/1

{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["hackney_url"],"packageName":"hackney","packageURL":"pkg:hex/hackney","product":"hackney","programFiles":["src/hackney_url.erl"],"programRoutines":[{"name":"hackney_url:normalize/2"}],"repo":"https://github.com/benoitc/hackney","vendor":"benoitc","versions":[{"lessThan":"4.0.1","status":"affected","version":"0.13.0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /containers/cna/affected/0
cwe · 2 assertions

{"cweId":"CWE-918","description":"CWE-918 Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-436","description":"CWE-436 Interpretation Conflict","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

2 source assertions
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["hackney_url"],"packageName":"benoitc/hackney","packageURL":"pkg:github/benoitc/hackney","product":"hackney","programFiles":["src/hackney_url.erl"],"programRoutines":[{"name":"hackney_url:normalize/2"}],"repo":"https://github.com/benoitc/hackney","vendor":"benoitc","versions":[{"lessThan":"452620a92ec1da2e6b4862a049a2a4f04b42068f","status":"affected","version":"4d725507588942fd00efca15b86da3273656510a","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /containers/cna/affected/1
{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["hackney_url"],"packageName":"hackney","packageURL":"pkg:hex/hackney","product":"hackney","programFiles":["src/hackney_url.erl"],"programRoutines":[{"name":"hackney_url:normalize/2"}],"repo":"https://github.com/benoitc/hackney","vendor":"benoitc","versions":[{"lessThan":"4.0.1","status":"affected","version":"0.13.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-918","description":"CWE-918 Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-436","description":"CWE-436 Interpretation Conflict","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-47076.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/benoitc/hackney/commit/452620a92ec1da2e6b4862a049a2a4f04b42068f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /containers/cna/references/3
{"tags":["exploit"],"url":"https://github.com/benoitc/hackney/security/advisories/GHSA-pj7v-xfvx-wmjq"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /containers/adp/0/references/0
{"tags":["vendor-advisory","related"],"url":"https://github.com/benoitc/hackney/security/advisories/GHSA-pj7v-xfvx-wmjq"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /containers/cna/references/0
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-47076"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2f313c2280573c922261081397cc9d0d69c48a23161269616c42d7304c0becd · sha256:adf7dce10eadf0e0… · /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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