CVE-2026-82057

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    CVE-2026-82057

    Published: 8 Sept 2026Last Modified: 18 Sept 2026

    Summary: Type Confusion in MongoDB Server WiredTiger Storage Engine via Custom Collection Configuration Leads to Persistent Denial of Service

    Details: A security issue was discovered in MongoDB where an authenticated user with readWrite privileges could crash the mongod server process. By specifying a custom WiredTiger storage configuration option with an incompatible value during collection creation, a user could cause a type confusion in the storage engine layer. When documents were subsequently read from the misconfigured collection, the resulting mismatch in expected data format led to corrupted memory interpretation and a server crash. The crafted collection configuration persists across restarts, requiring manual operator intervention to remediate.

    References: https://jira.mongodb.org/browse/SERVER-130495, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82057.json, https://nvd.nist.gov/vuln/detail/CVE-2026-82057

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0f29b043a58fdd251ce0a0b32754b8459613c933
    Fixed -1dc3d60c3237b53589325474c668e849ecec3bae

    Affected versions

    r8.3.3
    r8.3.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-82057 | CVE-DB