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    CVE-2026-45740

    protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.8 and 8.2.0, protobufjs could recurse without a depth limit while expanding nested JSON descriptors through Root.fromJSON() and Namespace.addJSON(). A crafted JSON descriptor with deeply nested namespace definitions could cause the JavaScript call stack to be exhausted during descriptor loading. This vulnerability is fixed in 7.5.8 and 8.2.0.

    Published:May 13, 2026
    Last Modified:May 14, 2026
    EPS:May 13, 2026
    EPSS Score:0.00044
    CVSS Score:5.3

    Affected Products

    Vendor
    Protobuf
    Product
    Protobuf
    Vendor
    Protobufjs Project
    Product
    Protobufjs

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-674 Uncontrolled Recursion

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads

    Related CVEs

    CVE-2026-59876 (CVSS 4.8) — protobufjs compiles protobuf definitions into JavaScript (JS) functions. From 8.2.0 until 8.6.5, the protobufj…
    CVE-2026-59877 (CVSS 5.3) — protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.6.5 and 8.6.6, protobufjs …
    CVE-2026-54269 (CVSS 5.3) — protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 8.6.0 and 7.6.3, protobufjs …
    CVE-2026-48712 (CVSS 7.5) — protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.6.1 and 8.4.1, protobufjs …
    CVE-2026-54270 (CVSS 5.3) — protobufjs compiles protobuf definitions into JavaScript (JS) functions. From 8.2.0 to 8.4.2, protobufjs prese…
    CVE-2026-44295 (CVSS 8.7) — protobufjs-cli is the command line add-on for protobuf.js. Prior to 1.2.1 and 2.0.2, pbjs static code generati…
    CVE-2026-42290 (CVSS 7.8) — protobufjs-cli is the command line add-on for protobuf.js. Prior to 1.2.1 and 2.0.2, pbts invoked JSDoc by bui…
    CVE-2026-44294 (CVSS 5.3) — protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs …
    CVE-2026-44293 (CVSS 7.7) — protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs …
    CVE-2026-44292 (CVSS 5.3) — protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs …

    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