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CVE

CVE-2026-8924

trailing dot domain super cookie
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CVE

CVE-2026-8924

trailing dot domain super cookie

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
C
H
U
-

Related Resources

No items found.

References

https://curl.se/docs/CVE-2026-8924.html, https://curl.se/docs/CVE-2026-8924.json, https://hackerone.com/reports/3733905, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8924.json, https://nvd.nist.gov/vuln/detail/CVE-2026-8924

Severity

9.1

CVSS Score
0
10

Basic Information

Base CVSS
9.1
EPSS Probability
0.0056%
EPSS Percentile
0.44233%
Introduced Version
e2ae32ff5f3ab6f0819590f61f248f17df12987f,0,7.46.0
Fix Available
68720b4837284335b2d63cb358f8f6ce65f5bc55,7.58.0-2ubuntu3.24+esm9,7.68.0-1ubuntu2.25+esm4,8.5.0-2ubuntu10.10,7.81.0-1ubuntu1.25,8.21.0,8.21.0-r0

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