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TI-2026-40865 Aliases CVE-2026-56684

Valkey: TLS pending-data processing use-after-free may allow remote code execution

Priority LOW 35CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

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

Summary

Valkey is a distributed key-value database. Prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1, Valkey's tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator's cached next node and producing a use-after-free that can crash the server or potentially allow remote code execution when TLS is enabled. This issue is fixed in versions 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00523 44th percentileScored 2026-11-07
Fix Fixed valkey (valkey-io): 7.2.14, 8.0.10, 8.1.9 +2Red Hat: 4 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
MLflowvalkeybefore 7.2.14; 8.0.0 to before 8.0.10; 8.1.0 to before 8.1.9; 9.0.0 to before 9.0.5; 9.1.0 to before 9.1.17.2.14, 8.0.10, 8.1.9, 9.0.5, 9.1.1Patch availableCNA
  • valkey VendorMLflow Affected before 7.2.14; 8.0.0 to before 8.0.10; 8.1.0 to before 8.1.9; 9.0.0 to before 9.0.5; 9.1.0 to before 9.1.1 Fixed in 7.2.14, 8.0.10, 8.1.9, 9.0.5, 9.1.1 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:lfprojects:valkey:*:*:*:*:*:*:*:*——MLflow
  • cpe:2.3:a:lfprojects:valkey:*:*:*:*:*:*:*:* Versions — — ·MLflow

Remediation

  • Fix · CNA valkey (valkey-io) Fixed in 7.2.14, 8.0.10, 8.1.9, 9.0.5, 9.1.1

Red Hat 4 advisories

  • RHSA-2026:68601 Released 2026-09-17 · Red Hat rating Important
    valkey security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) valkey-8.0.11-1.el10_0, valkey-devel-8.0.11-1.el10_0
  • RHSA-2026:64807 Released 2026-09-08 · Red Hat rating Important
    valkey security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) valkey-8.0.10-1.el9_8, valkey-devel-8.0.10-1.el9_8
  • RHSA-2026:64796 Released 2026-09-08 · Red Hat rating Important
    valkey security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) valkey-8.0.11-1.el10_2, valkey-devel-8.0.11-1.el10_2
Show 1 more Red Hat advisories
  • RHSA-2026:61884 Released 2026-09-01 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images valkey-9.0.6-0.1.hum1@aarch64, valkey-9.0.6-0.1.hum1@src, valkey-9.0.6-0.1.hum1@x86_64 +10

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:64796
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:64807
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:68601
Red Hat Hardened ImagesFixed RHSA-2026:61884

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-56684
  2. 2026-10-29 EPSS moved to the below the 50th percentile

References

Other 8

  • TI-2026-46366 Server-side request forgery in mlflow KEVCVSS 3.1CRITICAL 9.3
  • TI-2023-03518 Absolute Path Traversal in mlflow/mlflow CVSS 3.1CRITICAL 10.0
  • TI-2023-01113 Path Traversal: '\..\filename' in mlflow/mlflow CVSS 3.1CRITICAL 9.8
  • TI-2025-31759 Redis Lua Use-After-Free may lead to remote code execution CVSS 3.1CRITICAL 10.0
  • TI-2026-81527 Code execution via scorer deserialization in MLflow servers CVSS 3.1CRITICAL 9.8
  • TI-2025-14028 Command Injection in mlflow/mlflow CVSS 3.1CRITICAL 10.0
See all 175 →

Sources

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