CVE-2026-44291

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Source
https://cve.org/CVERecord?id=CVE-2026-44291
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44291.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-44291
Aliases
Downstream
Related
Published
2026-05-13T14:42:13.984Z
Modified
2026-07-15T01:49:07.735561982Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
protobufjs: Code generation gadget after prototype pollution
Details

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs used plain objects with inherited prototypes for internal type lookup tables used by generated encode and decode functions. If Object.prototype had already been polluted, those lookup tables could resolve attacker-controlled inherited properties as valid protobuf type information. This could cause attacker-controlled strings to be emitted into generated JavaScript code. This vulnerability is fixed in 7.5.6 and 8.0.2.

Database specific 
{
    "cwe_ids": [
        "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44291.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/protobufjs/protobuf.js

Affected ranges

Type
GIT
Repo
https://github.com/protobufjs/protobuf.js
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
2189e5beeca6a70e4c104dfdb9fb8200bc5f81fe
Introduced
933e8750dcd000c16a621a7344a4beaa034c4019
Fixed
658b93e163d9aff8c31236c168657bab5e2d9bbc
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "7.5.6"
        },
        {
            "introduced": "8.0.0"
        },
        {
            "fixed": "8.0.2"
        }
    ],
    "cpe": "cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*",
    "source": "CPE_RANGE"
}

Affected versions

6.*
6.0.0
6.0.1
6.0.2
6.1.0
6.1.1
6.2.0
6.2.1
6.3.0
6.3.1
6.4.0
6.4.1
6.4.2
6.4.3
6.4.4
6.4.5
6.4.6
6.5.0
6.5.1
6.5.2
6.5.3
6.6.0
6.6.1
6.6.2
6.6.3
6.6.4
6.6.5
6.7.0
6.7.1
6.7.2
6.7.3
6.8.0
6.8.1
6.8.2
6.8.3
6.8.4
6.8.5
6.8.6
6.8.7
6.8.8
protobufjs-cli-v1.*
protobufjs-cli-v1.0.0
protobufjs-cli-v1.0.1
protobufjs-cli-v1.0.2
protobufjs-cli-v1.1.0
protobufjs-cli-v1.1.1
protobufjs-cli-v1.1.2
protobufjs-cli-v1.1.3
protobufjs-cli-v1.1.4
protobufjs-cli-v1.2.0
protobufjs-cli-v2.*
protobufjs-cli-v2.0.0
protobufjs-cli-v2.0.1
protobufjs-v7.*
protobufjs-v7.0.0
protobufjs-v7.1.0
protobufjs-v7.1.1
protobufjs-v7.1.2
protobufjs-v7.2.0
protobufjs-v7.2.1
protobufjs-v7.2.2
protobufjs-v7.2.3
protobufjs-v7.2.4
protobufjs-v7.2.5
protobufjs-v7.2.6
protobufjs-v7.3.0
protobufjs-v7.3.1
protobufjs-v7.3.2
protobufjs-v7.3.3
protobufjs-v7.4.0
protobufjs-v7.5.0
protobufjs-v7.5.1
protobufjs-v7.5.2
protobufjs-v7.5.3
protobufjs-v7.5.4
protobufjs-v7.5.5
protobufjs-v8.*
protobufjs-v8.0.0
protobufjs-v8.0.1
v6.*
v6.10.0
v6.10.0-beta.0
v6.10.0-beta.1
v6.10.0-beta.2
v6.10.1
v6.10.1-beta.0
v6.10.2
v6.9.0
v6.9.0-beta.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44291.json"