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CVE-2026-8924

A flaw in curl’s cookie parsing logic allows a malicious HTTP server to set 'super cookies' that bypass the Public Suffix List check. This enables an attacker-controlled origin to inject cookies that curl subsequently scopes and transmits to unrelated third-party domains.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3d748cdcdc63323e5e40d8cbf3f6829a0cb3e4b8043b4ca3bfd9a421e896608b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"curl","vendor":"curl","versions":[{"lessThanOrEqual":"8.20.0","status":"affected","version":"8.20.0","versionType":"semver"},{"lessThanOrEqual":"8.19.0","status":"affected","version":"8.19.0","versionType":"semver"},{"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","ve…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e5f6830b52ca48e00eca8916a6e6bf11d0a73777e8a4234da1f3bf9dc641a5a2 · sha256:5c62ee106058d03a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e5f6830b52ca48e00eca8916a6e6bf11d0a73777e8a4234da1f3bf9dc641a5a2 · sha256:5c62ee106058d03a… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"description":"CWE-201 Information Exposure Through Sent Data","lang":"en"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e5f6830b52ca48e00eca8916a6e6bf11d0a73777e8a4234da1f3bf9dc641a5a2 · sha256:5c62ee106058d03a… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"www","url":"https://curl.se/docs/CVE-2026-8924.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e5f6830b52ca48e00eca8916a6e6bf11d0a73777e8a4234da1f3bf9dc641a5a2 · sha256:5c62ee106058d03a… · /containers/cna/references/1
{"name":"json","url":"https://curl.se/docs/CVE-2026-8924.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e5f6830b52ca48e00eca8916a6e6bf11d0a73777e8a4234da1f3bf9dc641a5a2 · sha256:5c62ee106058d03a… · /containers/cna/references/0
{"name":"issue","url":"https://hackerone.com/reports/3733905"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e5f6830b52ca48e00eca8916a6e6bf11d0a73777e8a4234da1f3bf9dc641a5a2 · sha256:5c62ee106058d03a… · /containers/cna/references/2
{"tags":["exploit"],"url":"https://hackerone.com/reports/3733905"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e5f6830b52ca48e00eca8916a6e6bf11d0a73777e8a4234da1f3bf9dc641a5a2 · sha256:5c62ee106058d03a… · /containers/adp/0/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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