CVE-2021-23432
Prototype Pollution
This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Prototype Pollution
This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()
- Record
CVE-2021-23432- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P - Updated
- 2026-11-02
EUVDEUVD-2021-2130
This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()
- Record
EUVD-2021-2130- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-x6hx-7gh3-3q98
Prototype Pollution in mootools
This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()
- Record
GHSA-x6hx-7gh3-3q98- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-1321
- Updated
- 2026-11-02
NVD
This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()
- Record
CVE-2021-23432- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N - 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 - Updated
- 2026-11-02
OSVGHSA-x6hx-7gh3-3q98
Prototype Pollution in mootools
This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()
- Record
GHSA-x6hx-7gh3-3q98- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-1321
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-23432
This affects all versions of package mootools. This is due to the ability to pass untrusted input to Object.merge()
- Record
UBUNTU-CVE-2021-23432- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N - 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
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mootoolsnpm |
through 1.5.2 | None known |
mootoolsUbuntu:16.04:LTS |
All versions, plus listed versions 1.4.5~debian1-2.1 |
None known |
mootoolsUbuntu:18.04:LTS |
All versions, plus listed versions 1.4.5~debian1-2.1 |
None known |
mootoolsUbuntu:20.04:LTS |
All versions, plus listed versions 1.4.5~debian1-2.1 |
None known |
mootoolsUbuntu:22.04:LTS |
All versions, plus listed versions 1.4.5~debian1-3 |
None known |
mootoolsUbuntu:24.04:LTS |
All versions, plus listed versions 1.4.5~debian1-3 |
None known |
mootoolsUbuntu:25.10 |
All versions, plus listed versions 1.4.5~debian1-3 |
None known |
mootoolsUbuntu:26.10 |
All versions, plus listed versions 1.4.5~debian1-3build1 |
None known |
mootoolsUbuntu:26.04:LTS |
All versions, plus listed versions 1.4.5~debian1-31.4.5~debian1-3build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| 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-2021-23432 is a medium vulnerability (CVSS 5.4) in Mootools Project Mootools, published August 24, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.89%, the 59th percentile. No source names a fixed version.