CVE-2019-10750
Prototype Pollution in deeply
deeply is vulnerable to Prototype Pollution in versions before 3.1.0. The function assign-deep could be tricked into adding or modifying properties of Object.prototype using using 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
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
deeply is vulnerable to Prototype Pollution in versions before 3.1.0. The function assign-deep could be tricked into adding or modifying properties of Object.prototype using using a proto payload.
- Record
CVE-2019-10750- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-400
- Updated
- 2026-11-02
CVE List No score
deeply is vulnerable to Prototype Pollution in versions before 3.1.0. The function assign-deep could be tricked into adding or modifying properties of Object.prototype using using a proto payload.
- Record
CVE-2019-10750- Updated
- 2026-11-02
EUVDEUVD-2019-0628 No score
deeply is vulnerable to Prototype Pollution in versions before 3.1.0. The function assign-deep could be tricked into adding or modifying properties of Object.prototype using using a proto payload.
- Record
EUVD-2019-0628- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8j4w-5fw4-rm27
Prototype Pollution in deeply
Versions of deeply prior to 1.0.1 are vulnerable to Prototype Pollution. The package 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 version 3.1.0 or later.
- Record
GHSA-8j4w-5fw4-rm27- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVGHSA-8j4w-5fw4-rm27
Prototype Pollution in deeply
Versions of deeply prior to 1.0.1 are vulnerable to Prototype Pollution. The package 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 version 3.1.0 or later.
- Record
GHSA-8j4w-5fw4-rm27- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
deeplynpm |
before 3.1.0 | 3.1.0 |
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-2019-10750 is a critical vulnerability (CVSS 9.8) in Deeply Project Deeply, published August 23, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.69%, the 77th percentile. Fixed in deeply 3.1.0.