CVE-2026-12644

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Source
https://cve.org/CVERecord?id=CVE-2026-12644
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12644.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-12644
Aliases
Downstream
CLSA (2)
Published
2026-06-19T05:00:00Z
Modified
2026-10-28T02:30:45Z
Severity
  • 5.5 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
[none]
Details

Versions of the package ts-deepmerge before 8.0.0 are vulnerable to Uncaught Exception due to the improper handling of built-in Object.prototype methods (such as toString, valueOf). When user-controlled input contains these keys with non-function values, the resulting merged object becomes broken — any string context operation throws a TypeError, crashing the application.

Database specific 
{
    "cna_assigner": "snyk",
    "cwe_ids": [
        "CWE-248"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12644.json"
}
References

Affected packages

Git / github.com/voodoocreation/ts-deepmerge

Affected ranges

Type
GIT
Repo
https://github.com/voodoocreation/ts-deepmerge
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
305a05831a462fb2c353d3cbbff55a0733286f8c
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "8.0.0"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "fixed": "305a05831a462fb2c353d3cbbff55a0733286f8c"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "8.0.0"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}

Affected versions

1.*
1.0.0
1.0.1
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.0.8
1.1.0
2.*
2.0.0
2.0.1
2.0.2
2.0.3
2.0.4
2.0.5
2.0.6
2.0.7
3.*
3.0.0
4.*
4.0.0
5.*
5.0.0
6.*
6.0.0
6.0.1
6.0.2
6.0.3
6.1.0
6.2.0
6.2.1
7.*
7.0.0
7.0.1
7.0.2
7.0.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12644.json"