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Github Security Blog
Github Security Blog
•added 2026/06/19 6:31 a.m.•26 views

ts-deepmerge: Prototype Method Override leads to DoS

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 —...

6.9CVSS5.8AI score0.00507EPSS
SaveExploits0References5Affected Software1
NVD
NVD
•added 2026/06/19 6:17 a.m.•38 views

CVE-2026-12644

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 —...

6.9CVSS0.00507EPSS
SaveExploits0References3
attackerkb
attackerkb
•added 2026/06/19 5:00 a.m.•20 views

CVE-2026-12644

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 —...

6.9CVSS5.8AI score0.00507EPSS
SaveExploits0References4
Cvelist
Cvelist
•added 2026/06/19 5:00 a.m.•63 views

CVE-2026-12644

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 —...

6.9CVSS0.00507EPSS
SaveExploits0References3
EUVD
EUVD
•added 2026/06/19 5:00 a.m.•55 views

EUVD-2026-37991

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 —...

6.9CVSS5.8AI score0.00507EPSS
SaveExploits0References3
CVE
CVE
•added 2026/06/19 5:00 a.m.•80 views

CVE-2026-12644

The CVE affects ts-deepmerge before version 8.0.0. The vulnerability stems from improper handling of built-in Object.prototype methods (e.g., toString, valueOf) during merging. If user-controlled input supplies these keys with non-function values, the merged object can break and throw a TypeError...

6.9CVSS5.8AI score0.00507EPSS
SaveExploits0References3
Vulnrichment
Vulnrichment
•added 2026/06/19 5:00 a.m.•14 views

CVE-2026-12644

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 —...

6.9CVSS5.8AI score0.00507EPSS
SaveExploits0References3
osv_cve
osv_cve
•added 2026/06/19 5:00 a.m.•19 views

CVE-2026-12644

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 —...

6.9CVSS6AI score
SaveExploits0References5
Rapid7 Vulnerability Database (full)
Rapid7 Vulnerability Database (full)
•added 2026/06/19 12:00 a.m.•7 views

CVE-2026-12644: Uncaught Exception

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 —...

6.9CVSS5.8AI score0.00507EPSS
SaveExploits0References2
Positive Technologies
Positive Technologies
•added 2026/06/19 12:00 a.m.•51 views

PT-2026-50839

Name of the Vulnerable Software and Affected Versions ts-deepmerge versions prior to 8.0.0 Description An uncaught exception occurs due to improper handling of built-in Object.prototype methods, such as toString and valueOf. When user-controlled input contains these keys with non-function values,...

6.9CVSS5.7AI score0.00507EPSS
SaveExploits0References12
vulnersOsv
vulnersOsv
•added 2026/05/21 8:02 a.m.•11 views

org.webjars.npm:dash0__sdk-web (0.18.4), org.webjars.npm:scalar__import (>=0.3.16, <=0.4.6) +3 more potentially affected by CVE-2026-12644 via org.webjars.npm:ts-deepmerge (7.0.3)

org.webjars.npm:ts-deepmerge MAVEN version 7.0.3 is affected by a known vulnerability. The following packages have a transitive dependency on org.webjars.npm:ts-deepmerge and may be impacted: - org.webjars.npm:dash0sdk-web 0.18.4 - org.webjars.npm:scalarimport =0.3.16, =0.2.107, =1.1.13, =0.1.30,...

6.9CVSS5.8AI score0.00507EPSS
SaveExploits0
Snyk
Snyk
•added 2026/05/21 8:02 a.m.•31 views

Uncaught Exception

Overview ts-deepmerge is an a deep merge function that automatically infers the return type based on your input, without mutating the source objects. Affected versions of this package are vulnerable to Uncaught Exception due to the improper handling of built-in Object.prototype methods such as...

6.9CVSS5.8AI score0.00507EPSS
SaveExploits0References2
Mend
Mend
•added 2026/05/14 5:25 a.m.•3 views

WS-2019-0129

@apollo/gateway before to 0.6.2 are vulnerable to Prototype Pollution. due to use of deepMerge to merge objects...

7.3CVSS5.9AI score
SaveExploits0References2
Github Security Blog
Github Security Blog
•added 2026/05/11 4:10 p.m.•28 views

@theecryptochad/merge-guard has Prototype Pollution in its deepMerge() function

Summary @theecryptochad/merge-guard versions prior to 1.0.1 are vulnerable to Prototype Pollution via the deepMerge function. An attacker who controls the source object can inject proto keys that mutate Object.prototype, affecting all objects in the Node.js runtime. Details The deepMerge function...

5.9AI score
SaveExploits0References3Affected Software1
Positive Technologies
Positive Technologies
•added 2026/05/11 12:00 a.m.•5 views

PT-2026-42530

Summary @theecryptochad/merge-guard versions prior to 1.0.1 are vulnerable to Prototype Pollution via the deepMerge function. An attacker who controls the source object can inject proto keys that mutate Object.prototype, affecting all objects in the Node.js runtime. Details The deepMerge function...

7.5CVSS6AI score
SaveExploits0References4
EUVD
EUVD
•added 2025/10/07 12:30 a.m.•22 views

EUVD-2021-2598

Malware in sbrugna...

9.8CVSS8.1AI score0.0121EPSS
SaveExploits1References4
EUVD
EUVD
•added 2025/10/07 12:30 a.m.•18 views

EUVD-2021-2604

Malware in sbrugna...

9.8CVSS8.1AI score0.0121EPSS
SaveExploits1References4
EUVD
EUVD
•added 2025/10/07 12:30 a.m.•40 views

EUVD-2021-1894

Malware in sbrugna...

9.8CVSS8.1AI score0.01083EPSS
SaveExploits1References6
EUVD
EUVD
•added 2025/10/07 12:30 a.m.•27 views

EUVD-2021-1150

Malware in sbrugna...

9.8CVSS8.1AI score0.01916EPSS
SaveExploits1References3
EUVD
EUVD
•added 2025/10/03 8:07 p.m.•28 views

EUVD-2022-6507

Malicious code in bioql PyPI...

9.8CVSS7.9AI score0.01849EPSS
SaveExploits1References5
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