CVE-2019-10745
assign-deep Vulnerable to Prototype Pollution
assign-deep is vulnerable to Prototype Pollution in versions before 0.4.8 and version 1.0.0. The function assign-deep could be tricked into adding or modifying properties of Object.prototype using either a constructor or a proto payload.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
assign-deep is vulnerable to Prototype Pollution in versions before 0.4.8 and version 1.0.0. The function assign-deep could be tricked into adding or modifying properties of Object.prototype using either a constructor or a proto payload.
- Record
CVE-2019-10745- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-1321
- Updated
- 2026-11-02
CVE List No score
assign-deep is vulnerable to Prototype Pollution in versions before 0.4.8 and version 1.0.0. The function assign-deep could be tricked into adding or modifying properties of Object.prototype using either a constructor or a proto payload.
- Record
CVE-2019-10745- Updated
- 2026-11-02
EUVDEUVD-2019-0624 No score
assign-deep is vulnerable to Prototype Pollution in versions before 0.4.8 and version 1.0.0. The function assign-deep could be tricked into adding or modifying properties of Object.prototype using either a constructor or a proto payload.
- Record
EUVD-2019-0624- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-66rh-8fw6-59q6
assign-deep Vulnerable to Prototype Pollution
Versions of assign-deep prior to 1.0.1 and 0.4.8 are vulnerable to Prototype Pollution. The assign function fails to validate which Object properties it updates. This allows attackers to modify the prototype of Object, causing the addition or modification of an existing property on all objects.
Recommendation
Upgrade to versions 1.0.1, 0.4.8, or later.
- Record
GHSA-66rh-8fw6-59q6- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-20, CWE-915, CWE-1321
- Updated
- 2026-11-02
OSVGHSA-66rh-8fw6-59q6
assign-deep Vulnerable to Prototype Pollution
Versions of assign-deep prior to 1.0.1 and 0.4.8 are vulnerable to Prototype Pollution. The assign function fails to validate which Object properties it updates. This allows attackers to modify the prototype of Object, causing the addition or modification of an existing property on all objects.
Recommendation
Upgrade to versions 1.0.1, 0.4.8, or later.
- Record
GHSA-66rh-8fw6-59q6- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-1321, CWE-20, CWE-915
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
assign-deepnpm |
before 0.4.8 | 0.4.8 |
assign-deepnpm |
1.0.0 to 1.0.0 | 1.0.1 |
assign-deepnpm |
1.0.0 up to 1.0.1 | 1.0.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-10745 is a high vulnerability (CVSS 7.5) in Assign-deep Project Assign-deep, published August 20, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.14%, the 66th percentile. Fixed in assign-deep 0.4.8.
References
snyk.io/vuln/SNYK-JS-ASSIGNDEEP-450211
nvd.nist.gov/vuln/detail/CVE-2019-10745
npmjs.com/advisories/1014
github.com/jonschlinkert/assign-deep/commit/8e3cc4a34246733672c71e96532105384937e56c