Read the docs
TI-2026-03294 Aliases CVE-2026-3805GHSA-2289-hhfc-p684

use after free in SMB connection reuse

Priority HIGH 72CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 1 fixed, 9 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00896 59th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial curl (curl): 8.14.2, 8.16.1, 8.19.0Red Hat: 1 advisoryRed Hat: 1 fixed, 9 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
curlcurl8.13.0 to before 8.14.2; 8.15.0 to before 8.16.1; 8.17.0 to before 8.19.08.14.2, 8.16.1, 8.19.0Patch availableCNA
curlcurl8.18.0; 8.17.0; 8.16.0; 8.15.0; 8.14.1; 8.14.0; 8.13.0—No fix listedCNA
  • curl Vendorcurl Affected 8.13.0 to before 8.14.2; 8.15.0 to before 8.16.1; 8.17.0 to before 8.19.0 Fixed in 8.14.2, 8.16.1, 8.19.0 Patch available CNA
  • curl Vendorcurl Affected 8.18.0; 8.17.0; 8.16.0; 8.15.0; 8.14.1; 8.14.0; 8.13.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*8.13.0 to before 8.19.0VulnerableHaxx
  • cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* Versions 8.13.0 to before 8.19.0 Vulnerable ·Haxx

Remediation

  • Fix · CNA curl (curl) Fixed in 8.14.2, 8.16.1, 8.19.0

Red Hat 1 advisory

  • RHSA-2026:6893 Released 2026-04-07 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images curl-8.19.0-3.hum1@aarch64, curl-8.19.0-3.hum1@src, curl-8.19.0-3.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 8.14.2, 8.16.1, 8.19.0

    4 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-03272 token leak with redirect and netrcPriority MEDIUM 63
    • TI-2026-03273 wrong proxy connection reuse with credentialsPriority LOW 35
    • TI-2026-01624 bad reuse of HTTP Negotiate connectionPriority LOW 29
    Show all 4 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
Logging Subsystem for Red Hat OpenShiftAffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet: Fix deferred
Red Hat JBoss Core ServicesAffectedNo fix yet: Fix deferred
Red Hat OpenShift Container Platform 4AffectedNo fix yet: Fix deferred
Red Hat OpenShift Dev SpacesAffectedNo fix yet: Fix deferred
Red Hat Trusted Profile AnalyzerAffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesFixed RHSA-2026:6893
Not affected: 5 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

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-3805
  2. 2026-10-03 Alias added: GHSA-2289-hhfc-p684

References

Exploit 1

Patch 1

Advisory 2

See all 103 →

Sources

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