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TI-2026-09987 Aliases CVE-2026-11564GHSA-hf82-6jff-f22v

Native CA trust persist

Priority HIGH 74CWE-295Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 1 fixed, 5 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-295.

Summary

libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. An easy handle that first uses default native CA trust can continue trusting the native platform store after the application switches that same handle to custom CA material for a later transfer.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0061 49th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial curl (curl): 8.20.1Red Hat: 2 advisoriesRed Hat: 1 fixed, 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
curlcurl8.17.0 to before 8.20.18.20.1Patch availableCNA
curlcurl8.20.0; 8.19.0; 8.18.0; 8.17.0—No fix listedCNA
  • curl Vendorcurl Affected 8.17.0 to before 8.20.1 Fixed in 8.20.1 Patch available CNA
  • curl Vendorcurl Affected 8.20.0; 8.19.0; 8.18.0; 8.17.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*8.17.0 to before 8.21.0VulnerableHaxx
  • cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* Versions 8.17.0 to before 8.21.0 Vulnerable ·Haxx

Remediation

  • Fix · CNA curl (curl) Fixed in 8.20.1

Red Hat 2 advisories

  • RHSA-2026:34975 Released 2026-07-02 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images cargo-1.96.1-1.hum1@aarch64, cargo-1.96.1-1.hum1@x86_64, clippy-1.96.1-1.hum1@aarch64 +36
  • RHSA-2026:29017 Released 2026-06-24 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images curl-8.21.0-0.1.hum1@aarch64, curl-8.21.0-0.1.hum1@src, curl-8.21.0-0.1.hum1@x86_64 +6

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    curl 8.20.1

    3 records Highest priority Priority HIGH 3 HIGH

    Other records, highest priority first

    Show all 3 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Confidential Compute AttestationAffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet
Red Hat OpenShift Container Platform 4AffectedNo fix yet: Fix deferred
Red Hat OpenShift Container Platform 5AffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesFixed RHSA-2026:29017, RHSA-2026:34975
Not affected: 8 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat JBoss Core Services
  • Red Hat OpenShift Dev Spaces
  • Red Hat Trusted Profile Analyzer

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-11564
  2. 2026-10-03 Alias added: GHSA-hf82-6jff-f22v
  3. 2026-10-30 Affected versions changed · Red Hat

References

Exploit 1

Patch 1

Advisory 1

See all 103 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences