CVE-2021-23396
Prototype Pollution
All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Prototype Pollution
All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.
- Record
CVE-2021-23396- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2021-1256
All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.
- Record
EUVD-2021-1256- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3r8w-mphv-2f3f
Prototype Pollution in lutils
All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.
- Record
GHSA-3r8w-mphv-2f3f- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-1321
- Updated
- 2026-11-02
NVD
All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.
- Record
CVE-2021-23396- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L - 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-1321
- Updated
- 2026-11-02
OSVGHSA-3r8w-mphv-2f3f
Prototype Pollution in lutils
All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.
- Record
GHSA-3r8w-mphv-2f3f- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-1321
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
lutilsnpm |
through 2.4.0 | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-23396 is a medium vulnerability (CVSS 5.6) in Lutils Project Lutils, published June 17, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.00%, the 63rd percentile. No source names a fixed version.