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CVE

CURL-CVE-2026-8924

trailing dot domain super cookie
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CVE

CURL-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
-
C
H
U
-

Related Resources

No items found.

References

Severity

9.1

CVSS Score
0
10

Basic Information

Base CVSS
9.1
EPSS Probability
0.00649%
EPSS Percentile
0.47015%
Introduced Version
7.46.0,e77b5b7453c1e8ccd7ec0816890d98e2f392e465
Fix Available
8.21.0,51beed175dbfc37da3113f6acce60c630c070ce8

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