A vulnerability was determined in valkey-io valkey 9.1.0. Impacted is the function moduleTimerHandler of the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: b349fe2821e3998534b1454c1b64a478daf8c6b7. To fix this issue, it is recommended to deploy a patch.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - A vulnerability was determined in valkey-io valkey 9.1.0. Impacted is the function moduleTimerHandler of
    the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free. The
    attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name:
    b349fe2821e3998534b1454c1b64a478daf8c6b7. To fix this issue, it is recommended to deploy a patch.
    (CVE-2026-82677)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3091 advisory.

    A security flaw has been discovered in valkey-io valkey 9.1.0. The affected element is the function     handleClientsBlockedOnKey of the file src/blocked.c of the component Blocked-on-keys Subsystem. The     manipulation results in use after free. The attack may be performed from remote. A high complexity level     is associated with this attack. The exploitability is described as difficult. The exploit has been     released to the public and may be used for attacks. The patch is identified as     b2fb0e13f5b4c8c2fb63dcfc2c37a067a0d6d20b. Applying a patch is advised to resolve this issue.
    (CVE-2026-82631)

    A vulnerability was determined in valkey-io valkey 9.1.0. Impacted is the function moduleTimerHandler of     the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free. The     attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name:
    b349fe2821e3998534b1454c1b64a478daf8c6b7. To fix this issue, it is recommended to deploy a patch.
    (CVE-2026-82677)

    A vulnerability was detected in valkey-io valkey up to 9.5.4/9.1.0. Affected by this vulnerability is the     function createSlotImportJob of the file src/cluster_migrateslots.c of the component Slot Migration. The     manipulation of the argument job_name results in out-of-bounds read. The attack can be executed remotely.
    The exploit is now public and may be used. Upgrading to version 9.0.5 and 9.1.1 addresses this issue. The     patch is identified as f4dc3ca09eb650c2fe14060090a41c524eca803f. Upgrading the affected component is     advised. (CVE-2026-85522)

    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. (CVE-2026-86227)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A vulnerability was determined in valkey-io valkey 9.1.0. Impacted is the function moduleTimerHandler of     the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free. The     attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name:
    b349fe2821e3998534b1454c1b64a478daf8c6b7. To fix this issue, it is recommended to deploy a patch.
    (CVE-2026-82677)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
474806	Echo: redis: security update to 5:8.0.2-3+deb13u3+e1	Tenable Cloud Security	Echo Local Security Checks	Local	medium
474806	Echo: redis: security update to 5:8.0.2-3+deb13u3+e1	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	medium
347941	Amazon Linux 2023 : valkey, valkey-devel (ALAS2023-2026-3091)	Nessus	Amazon Linux Local Security Checks	Local	medium
341935	Linux Distros Unpatched Vulnerability : CVE-2026-82677	Nessus	Misc.	Local	medium

Detections

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CVE-2026-82677

medium

Tenable Plugins

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medium

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medium