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TI-2026-59016 Aliases CVE-2026-86227GHSA-74wm-q835-hxf9

valkey-io valkey kvstore.c kvstoreGetHashtable out-of-bounds

Priority MEDIUM 45CWE-119Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

A weakness has been identified in valkey-io valkey up to 9.0.5/9.1.1. This affects the function kvstoreGetHashtable of the file src/kvstore.c. This manipulation of the argument didx causes out-of-bounds read. It is possible to initiate the attack remotely. The attack is considered to have high complexity. It is indicated that the exploitability is difficult. The exploit has been made available to the public and could be used for attacks. Patch name: 4691888e7fab3df128f0bde5750c9fde2ae552fa. To fix this issue, it is recommended to deploy a patch. Exploitation requires cluster mode plus attacker-controlled dump.rdb at startup (data-dir write access, replication feed, or a stored crafted RDB) - an attacker-position DoS at boot, not network pre-auth. The issue report was closed stating it "is worth fixing for the sake of memory safety… but I don't think it meets our bar for a security disclosure."

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00523 44th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Red Hat: 1 advisory

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
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
MLflowvalkey9.0.0; 9.0.1; 9.0.2; 9.0.3; 9.0.4; 9.0.5; 9.1.0; 9.1.1—No fix listedCNA
  • valkey VendorMLflow Affected 9.0.0; 9.0.1; 9.0.2; 9.0.3; 9.0.4; 9.0.5; 9.1.0; 9.1.1 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:valkey-io:valkey:*:*:*:*:*:*:*:*———
  • cpe:2.3:a:valkey-io:valkey:*:*:*:*:*:*:*:* Versions — — ·—

Remediation

Red Hat 1 advisory

  • 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: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Hardened ImagesFixed RHSA-2026:61884

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-86227
  2. 2026-10-03 Alias added: GHSA-74wm-q835-hxf9
  3. 2026-10-18 Fix available: RHSA-2026:61884 · Red Hat
  4. 2026-10-18 Fix available: Red Hat Hardened Images · Red Hat
  5. 2026-10-18 CVSS score added · Red Hat

References

Exploit 1

Patch 2

Other 2

  • 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