ZDF
Sign inSign up

Vulnerabilities

Vulnerability · 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.

Published Jul 3, 2026 · catalog updated Oct 18, 2026 · Debian Debian

Check if you run it

No confirmed exploitation is on record for CVE-2026-8924. EPSS is 0.66%. Act only if a listed version of Debian Debian is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.66%
Remediation
Advisory link
Affected products
Alpine:v3.21 curl · Alpine:v3.22 curl · Alpine:v3.23 curl · Alpine:v3.24 curl

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Alpine:v3.21 curl7.46.0 → 8.14.1-r3
  • Alpine:v3.22 curl7.46.0 → 8.14.1-r4
  • Alpine:v3.23 curl7.46.0 → 8.22.0-r0
  • Alpine:v3.24 curl7.46.0 → 8.21.0-r0

How to fix CVE-2026-8924

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-8924. EPSS is 0.66%. Act only if a listed version of Debian Debian is installed.

Which versions are affected?

Compare what you have installed with 7.46.0 → 8.14.1-r3, 7.46.0 → 8.14.1-r4, 7.46.0 → 8.22.0-r0, 7.46.0 → 8.21.0-r0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.66%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 15, 2026 · Debian Security Advisories

    Detected

    [SECURITY] [DSA 6558-1] curl security update

  2. Oct 18, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    curl fixed in 8.14.1-r3; curl fixed in 8.14.1-r4; curl fixed in 8.22.0-r0; curl fixed in 8.21.0-r0

  3. Oct 18, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    curl fixed in 8.14.1-r3

  4. Oct 18, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    curl fixed in 8.14.1-r4

  5. Oct 18, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    curl fixed in 8.22.0-r0

  6. Oct 18, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    curl fixed in 8.21.0-r0

  7. Oct 18, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-8924

    Official CVE identifier

    cve.org
  • Debian Security AdvisoriesVendor advisoryCVE-2026-8924

    [SECURITY] [DSA 6558-1] curl security update

    lists.debian.org
  • FIRST EPSSExploitation probabilityCVE-2026-8924

    30-day exploitation probability 0.7%

    first.org
  • OpenSSF OSV / OSV ScannerPackage advisoryALPINE-CVE-2026-8924
    osv.dev
  • Trivy Vulnerability DBPackage advisoryALPINE-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.

    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.