CVE-2026-34221
- Source
- https://cve.org/CVERecord?id=CVE-2026-34221
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34221.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-34221
- Aliases
- Published
- 2026-03-31T15:17:45.286Z
- Modified
- 2026-08-12T03:51:48.017227923Z
- Severity
-
- 8.3 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:L/SA:L CVSS Calculator
- Summary
- MikroORM has Prototype Pollution in Utils.merge
- Details
-
MikroORM is a TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns. Prior to versions 6.6.10 and 7.0.6, a prototype pollution vulnerability exists in the Utils.merge helper used internally by MikroORM when merging object structures. The function did not prevent special keys such as proto, constructor, or prototype, allowing attacker-controlled input to modify the JavaScript object prototype when merged. This issue has been patched in versions 6.6.10 and 7.0.6.
- Database specific
{ "cwe_ids": [ "CWE-1321" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34221.json", "cna_assigner": "GitHub_M" }- References
Affected packages
Git / github.com/mikro-orm/mikro-orm
Affected ranges
- Type
- GIT
- Repo
- https://github.com/mikro-orm/mikro-orm
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedIntroducedFixed
- Database specific
-
Show details
{ "cpe": "cpe:2.3:a:mikro-orm:mikroorm:*:*:*:*:*:node.js:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "6.6.10" }, { "introduced": "7.0.0" }, { "fixed": "7.0.6" } ], "source": "CPE_RANGE" }
Affected versions
v0.*
v0.0.2
v0.1.0
v0.1.1
v0.10.0
v0.10.1
v0.10.2
v0.10.3
v0.10.4
v0.10.5
v0.10.6
v0.10.7
v0.10.8
v0.10.9
v0.2.0
v0.2.1
v0.2.2
v0.2.3
v0.3.0
v0.3.1
v0.3.2
v0.3.4
v0.3.5
v0.4.0
v0.5.0
v0.5.1
v0.5.2
v0.5.3
v0.5.4
v0.5.5
v0.5.6
v0.6.0
v0.6.1
v0.6.2
v0.6.3
v0.6.4
v0.6.5
v0.6.6
v0.6.7
v0.6.8
v0.7.0
v0.7.1
v0.7.2
v0.7.3
v0.7.4
v0.8.0
v0.8.1
v0.8.2
v0.9.0
v0.9.1
v0.9.2
v0.9.3
v0.9.4
v0.9.5
v0.9.6
v0.9.7
v0.9.8
v0.9.9
v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v1.1.0
v1.1.1
v1.2.0
v1.2.1
v1.2.2
v1.2.3
v2.*
v2.0.0
v2.0.0-rc
v2.0.1
v2.0.2
v2.0.3
v2.1.0
v2.1.1
v2.2.0
v2.2.1
v2.2.2
v2.3.0
v2.3.1
v2.3.2
v2.4.0
v2.5.0
v2.6.0
v2.7.0
v2.7.1
v2.7.2
v2.7.3
v2.7.4
v2.7.5
v2.7.6
v2.7.7
v2.7.8
v2.7.9
v3.*
v3.0.0
v3.0.0-rc
v3.0.1
v3.1.0
v3.1.1
v3.2.0
v3.2.1
v3.3.0
v3.3.1
v3.3.2
v3.3.3
v3.3.4
v3.3.5
v3.3.6
v3.4.0
v3.4.1
v3.5.0
v3.5.1
v3.5.2
v3.6.0
v3.6.1
v3.6.10
v3.6.12
v3.6.13
v3.6.14
v3.6.15
v3.6.2
v3.6.3
v3.6.4
v3.6.5
v3.6.6
v3.6.7
v3.6.8
v3.6.9
v4.*
v4.0.0
v4.0.1
v4.0.2
v4.0.3
v4.0.4
v4.0.5
v4.0.6
v4.0.7
v4.1.0
v4.1.1
v4.2.0
v4.2.1
v4.2.2
v4.2.3
v4.3.0
v4.3.1
v4.3.2
v4.3.3
v4.3.4
v4.4.0
v4.4.1
v4.4.2
v4.4.3
v4.4.4
v4.5.0
v4.5.1
v4.5.2
v4.5.3
v5.*
v5.0.0
v5.0.1
v5.0.2
v5.0.3
v5.0.4
v5.0.5
v5.1.0
v5.1.1
v5.1.2
v5.1.3
v5.1.4
v5.1.5
v5.2.0
v5.2.1
v5.2.2
v5.2.3
v5.2.4
v5.3.0
v5.3.1
v5.4.0
v5.4.1
v5.4.2
v5.5.0
v5.5.1
v5.5.2
v5.5.3
v5.6.0
v5.6.1
v5.6.10
v5.6.11
v5.6.12
v5.6.13
v5.6.14
v5.6.15
v5.6.16
v5.6.2
v5.6.3
v5.6.4
v5.6.5
v5.6.6
v5.6.7
v5.6.8
v5.6.9
v5.7.0
v5.7.1
v5.7.10
v5.7.11
v5.7.12
v5.7.13
v5.7.14
v5.7.2
v5.7.3
v5.7.4
v5.7.5
v5.7.6
v5.7.7
v5.7.8
v5.7.9
v5.8.0
v5.8.1
v5.8.10
v5.8.2
v5.8.3
v5.8.4
v5.8.5
v5.8.6
v5.8.7
v5.8.8
v5.8.9
v5.9.0
v5.9.1
v5.9.2
v6.*
v6.0.0
v6.0.1
v6.0.2
v6.0.3
v6.0.4
v6.0.5
v6.0.6
v6.0.7
v6.1.0
v6.1.1
v6.1.10
v6.1.11
v6.1.12
v6.1.2
v6.1.3
v6.1.4
v6.1.5
v6.1.6
v6.1.7
v6.1.8
v6.1.9
v6.2.0
v6.2.1
v6.2.2
v6.2.3
v6.2.4
v6.2.5
v6.2.6
v6.2.7
v6.2.8
v6.2.9
v6.3.0
v6.3.1
v6.3.10
v6.3.11
v6.3.12
v6.3.13
v6.3.2
v6.3.3
v6.3.4
v6.3.5
v6.3.6
v6.3.7
v6.3.8
v6.3.9
v6.4.0
v6.4.1
v6.4.10
v6.4.11
v6.4.12
v6.4.13
v6.4.14
v6.4.15
v6.4.16
v6.4.2
v6.4.3
v6.4.4
v6.4.5
v6.4.6
v6.4.7
v6.4.8
v6.4.9
v6.5.0
v6.5.1
v6.5.2
v6.5.3
v6.5.4
v6.5.5
v6.5.6
v6.5.7
v6.5.8
v6.5.9
v6.6.0
v6.6.1
v6.6.2
v6.6.3
v6.6.4
v6.6.5
v6.6.6
v6.6.7
v6.6.8
v6.6.9
v7.*
v7.0.0
v7.0.1
v7.0.2
v7.0.3
v7.0.4
v7.0.5