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A flaw in curl’s cookie parsing logic allows a malicious HTTP server to set "super cookies" that bypass the Public Suffix List check. (CVE-2026-8924)

0
Low
VulnerabilityCVE-2026-8924gcveosvghsa-hm6c-rc5h-32m9cve-2026-8924ghsacsafmicrosoft-security-response-cesuse-product-security-teamubuntu-cve-2026-8924ubuntu-pro-16-04-ltsubuntu-pro-18-04-ltsubuntu-pro-20-04-ltsubuntu-22-04-ltsubuntu-24-04-ltsubuntu-25-10ubuntu-26-04-lts
Published: 06/24/2026 (06/24/2026, 14:00:00 UTC)
Source: GCVE Database
Product: curl

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.

CVSS v3.1

Score 9.1critical

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected software

Ubuntu:Pro:16.04:LTSmore threats →ghsa
curl
pkg:deb/ubuntu/curl?arch=source&distro=esm-infra-legacy/xenial
Affected versions
<7.47.0-1ubuntu2.19+esm16=7.43.0-1ubuntu2=7.45.0-1ubuntu1=7.46.0-1ubuntu1=7.47.0-1ubuntu1=7.47.0-1ubuntu2=7.47.0-1ubuntu2.1=7.47.0-1ubuntu2.2=7.47.0-1ubuntu2.3=7.47.0-1ubuntu2.4=7.47.0-1ubuntu2.5=7.47.0-1ubuntu2.6=7.47.0-1ubuntu2.7=7.47.0-1ubuntu2.8=7.47.0-1ubuntu2.9=7.47.0-1ubuntu2.11=7.47.0-1ubuntu2.12=7.47.0-1ubuntu2.13=7.47.0-1ubuntu2.14=7.47.0-1ubuntu2.15=7.47.0-1ubuntu2.16=7.47.0-1ubuntu2.18=7.47.0-1ubuntu2.19=7.47.0-1ubuntu2.19+esm1=7.47.0-1ubuntu2.19+esm2=7.47.0-1ubuntu2.19+esm3=7.47.0-1ubuntu2.19+esm4=7.47.0-1ubuntu2.19+esm5=7.47.0-1ubuntu2.19+esm6=7.47.0-1ubuntu2.19+esm7=7.47.0-1ubuntu2.19+esm8=7.47.0-1ubuntu2.19+esm9=7.47.0-1ubuntu2.19+esm10=7.47.0-1ubuntu2.19+esm11=7.47.0-1ubuntu2.19+esm12=7.47.0-1ubuntu2.19+esm13=7.47.0-1ubuntu2.19+esm15
Ubuntu:Pro:18.04:LTSmore threats →ghsa
curl
pkg:deb/ubuntu/curl?arch=source&distro=esm-infra/bionic
Affected versions
<7.58.0-2ubuntu3.24+esm9=7.55.1-1ubuntu2=7.55.1-1ubuntu2.1=7.57.0-1ubuntu1=7.58.0-2ubuntu1=7.58.0-2ubuntu2=7.58.0-2ubuntu3=7.58.0-2ubuntu3.1=7.58.0-2ubuntu3.2=7.58.0-2ubuntu3.3=7.58.0-2ubuntu3.5=7.58.0-2ubuntu3.6=7.58.0-2ubuntu3.7=7.58.0-2ubuntu3.8=7.58.0-2ubuntu3.9=7.58.0-2ubuntu3.10=7.58.0-2ubuntu3.12=7.58.0-2ubuntu3.13=7.58.0-2ubuntu3.14=7.58.0-2ubuntu3.15=7.58.0-2ubuntu3.16=7.58.0-2ubuntu3.17=7.58.0-2ubuntu3.18=7.58.0-2ubuntu3.19=7.58.0-2ubuntu3.20=7.58.0-2ubuntu3.21=7.58.0-2ubuntu3.22=7.58.0-2ubuntu3.23=7.58.0-2ubuntu3.24=7.58.0-2ubuntu3.24+esm1=7.58.0-2ubuntu3.24+esm2=7.58.0-2ubuntu3.24+esm3=7.58.0-2ubuntu3.24+esm4=7.58.0-2ubuntu3.24+esm5=7.58.0-2ubuntu3.24+esm7=7.58.0-2ubuntu3.24+esm8
Ubuntu:Pro:20.04:LTSmore threats →ghsa
curl
pkg:deb/ubuntu/curl?arch=source&distro=esm-infra/focal
Affected versions
<7.68.0-1ubuntu2.25+esm4=7.65.3-1ubuntu3=7.65.3-1ubuntu4=7.66.0-1ubuntu1=7.67.0-2ubuntu1=7.68.0-1ubuntu1=7.68.0-1ubuntu2=7.68.0-1ubuntu2.1=7.68.0-1ubuntu2.2=7.68.0-1ubuntu2.4=7.68.0-1ubuntu2.5=7.68.0-1ubuntu2.6=7.68.0-1ubuntu2.7=7.68.0-1ubuntu2.10=7.68.0-1ubuntu2.11=7.68.0-1ubuntu2.12=7.68.0-1ubuntu2.13=7.68.0-1ubuntu2.14=7.68.0-1ubuntu2.15=7.68.0-1ubuntu2.16=7.68.0-1ubuntu2.18=7.68.0-1ubuntu2.19=7.68.0-1ubuntu2.20=7.68.0-1ubuntu2.21=7.68.0-1ubuntu2.22=7.68.0-1ubuntu2.23=7.68.0-1ubuntu2.24=7.68.0-1ubuntu2.25=7.68.0-1ubuntu2.25+esm2=7.68.0-1ubuntu2.25+esm3
Ubuntu:22.04:LTSmore threats →ghsa
curl
pkg:deb/ubuntu/curl?arch=source&distro=jammy
Affected versions
<7.81.0-1ubuntu1.25=7.74.0-1.3ubuntu2=7.74.0-1.3ubuntu3=7.80.0-3=7.81.0-1=7.81.0-1ubuntu1.1=7.81.0-1ubuntu1.2=7.81.0-1ubuntu1.3=7.81.0-1ubuntu1.4=7.81.0-1ubuntu1.6=7.81.0-1ubuntu1.7=7.81.0-1ubuntu1.8=7.81.0-1ubuntu1.10=7.81.0-1ubuntu1.11=7.81.0-1ubuntu1.13=7.81.0-1ubuntu1.14=7.81.0-1ubuntu1.15=7.81.0-1ubuntu1.16=7.81.0-1ubuntu1.17=7.81.0-1ubuntu1.18=7.81.0-1ubuntu1.19=7.81.0-1ubuntu1.20=7.81.0-1ubuntu1.21=7.81.0-1ubuntu1.22=7.81.0-1ubuntu1.23=7.81.0-1ubuntu1.24
Ubuntu:24.04:LTSmore threats →ghsa
curl
pkg:deb/ubuntu/curl?arch=source&distro=noble
Affected versions
<8.5.0-2ubuntu10.10=8.2.1-1ubuntu3=8.2.1-1ubuntu3.1=8.4.0-2ubuntu1=8.5.0-2ubuntu1=8.5.0-2ubuntu2=8.5.0-2ubuntu8=8.5.0-2ubuntu9=8.5.0-2ubuntu10=8.5.0-2ubuntu10.1=8.5.0-2ubuntu10.2=8.5.0-2ubuntu10.3=8.5.0-2ubuntu10.4=8.5.0-2ubuntu10.5=8.5.0-2ubuntu10.6=8.5.0-2ubuntu10.7=8.5.0-2ubuntu10.8=8.5.0-2ubuntu10.9
Ubuntu:25.10more threats →ghsa
curl
pkg:deb/ubuntu/curl?arch=source&distro=questing
Affected versions
<8.14.1-2ubuntu1.4=8.12.1-3ubuntu1=8.13.0-5ubuntu1=8.14.1-1ubuntu2=8.14.1-1ubuntu3=8.14.1-2ubuntu1=8.14.1-2ubuntu1.1=8.14.1-2ubuntu1.2=8.14.1-2ubuntu1.3
Ubuntu:26.04:LTSmore threats →ghsa
curl
pkg:deb/ubuntu/curl?arch=source&distro=resolute
Affected versions
<8.18.0-1ubuntu2.2=8.14.1-2ubuntu1=8.17.0-1ubuntu1=8.18.0-1ubuntu1=8.18.0-1ubuntu2=8.18.0-1ubuntu2.1

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-hm6c-rc5h-32m9
Osv Schema Version
1.4.0
Aliases
["CVE-2026-8924"]
Cvss Version
3.1

Threat ID: 6a483cb527e9c79719d820d5

Added to database: 07/03/2026, 22:50:29 UTC

Last enriched: 09/17/2026, 03:36:38 UTC

Last updated: 10/02/2026, 18:45:45 UTC

Views: 92

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