CVE-2026-8924 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Curl	Curl

No data.

No data.

References

Link	Providers
https://curl.se/docs/CVE-2026-8924.html
https://curl.se/docs/CVE-2026-8924.json
https://hackerone.com/reports/3733905

History

Sun, 05 Jul 2026 01:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-20

Sat, 04 Jul 2026 12:45:00 +0000

Type	Values Removed	Values Added
Weaknesses	CWE-20 CWE-639

Sat, 04 Jul 2026 01:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-20 CWE-639

Fri, 03 Jul 2026 21:00:00 +0000

Type	Values Removed	Values Added
Weaknesses	CWE-20 CWE-613

Fri, 03 Jul 2026 13:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-20 CWE-613

Fri, 03 Jul 2026 11:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Curl Curl curl
Vendors & Products		Curl Curl curl

Fri, 03 Jul 2026 06:45:00 +0000

Type	Values Removed	Values Added
Description		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.
Title		trailing dot domain super cookie
References		https://curl.se/docs/CVE-2026-8924.html https://curl.se/docs/CVE-2026-8924.json https://hackerone.com/reports/3733905

MITRE

Status: PUBLISHED

Assigner: curl

Published: 2026-07-03T06:15:04.646Z

Updated: 2026-07-03T06:15:04.646Z

Reserved: 2026-05-19T08:11:35.441Z

Link: CVE-2026-8924

Vulnrichment

No data.

NVD

No data.

Redhat

No data.

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-8924", "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9", "state": "PUBLISHED", "assignerShortName": "curl", "dateReserved": "2026-05-19T08:11:35.441Z", "datePublished": "2026-07-03T06:15:04.646Z", "dateUpdated": "2026-07-03T06:15:04.646Z"}, "containers": {"cna": {"title": "trailing dot domain super cookie", "descriptions": [{"lang": "en", "value": "A flaw in curl\u2019s cookie parsing logic allows a malicious HTTP server to set\n'super cookies' that bypass the Public Suffix List check. This enables an\nattacker-controlled origin to inject cookies that curl subsequently scopes and\ntransmits to unrelated third-party domains."}], "providerMetadata": {"orgId": "2499f714-1537-4658-8207-48ae4bb9eae9", "shortName": "curl", "dateUpdated": "2026-07-03T06:15:04.646Z"}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-201 Information Exposure Through Sent Data"}]}], "affected": [{"vendor": "curl", "product": "curl", "versions": [{"version": "8.20.0", "status": "affected", "lessThanOrEqual": "8.20.0", "versionType": "semver"}, {"version": "8.19.0", "status": "affected", "lessThanOrEqual": "8.19.0", "versionType": "semver"}, {"version": "8.18.0", "status": "affected", "lessThanOrEqual": "8.18.0", "versionType": "semver"}, {"version": "8.17.0", "status": "affected", "lessThanOrEqual": "8.17.0", "versionType": "semver"}, {"version": "8.16.0", "status": "affected", "lessThanOrEqual": "8.16.0", "versionType": "semver"}, {"version": "8.15.0", "status": 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