CVE-2021-3815
Prototype Pollution in fabiocaccamo/utils.js
utils.js is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Prototype Pollution in fabiocaccamo/utils.js
utils.js is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
- Record
CVE-2021-3815- CVSS 3.0
- 8.0 High
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H - Weakness
- CWE-1321
- Updated
- 2026-11-02
EUVDEUVD-2021-2435
utils.js is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
- Record
EUVD-2021-2435- CVSS 3.0
- 8.0 High
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3xph-cp8f-2229
Prototype Pollution in @fabiocaccamo/utils.js
utils.js is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
- Record
GHSA-3xph-cp8f-2229- CVSS 3.0
- 8.0 High
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H - Weakness
- CWE-1321
- Updated
- 2026-11-02
NVD
utils.js is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
- Record
CVE-2021-3815- 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 3.0
- 8.0 High
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-1321
- Updated
- 2026-11-02
OSV
utils.js is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
- Record
CVE-2021-3815- 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 - Updated
- 2026-11-02
OSVGHSA-3xph-cp8f-2229
Prototype Pollution in @fabiocaccamo/utils.js
utils.js is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
- Record
GHSA-3xph-cp8f-2229- CVSS 3.0
- 8.0 High
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H - Weakness
- CWE-1321
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
@fabiocaccamo/utils.jsnpm |
before 0.17.2 | 0.17.2 |
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-2021-3815 is a high vulnerability (CVSS 8.0) in Fabiocaccamo Fabiocaccamo/utils.js, published December 8, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.87%, the 59th percentile. Fixed in @fabiocaccamo/utils.js 0.17.2.