CVE-2022-21213
Prototype Pollution
This affects all versions of package mout. The deepFillIn function can be used to 'fill missing properties recursively', while the deepMixIn mixes objects into the target object, recursively mixing existing child objects as well. In both cases, the key used to access the target object recursively is not checked, leading to exploiting this vulnerability. Note: This vulnerability derives from an incomplete fix of CVE-2020-7792.
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
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Prototype Pollution
This affects all versions of package mout. The deepFillIn function can be used to 'fill missing properties recursively', while the deepMixIn mixes objects into the target object, recursively mixing existing child objects as well. In both cases, the key used to access the target object recursively is not checked, leading to exploiting this vulnerability. Note: This vulnerability derives from an incomplete fix of CVE-2020-7792.
- Record
CVE-2022-21213- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P - Updated
- 2026-11-02
EUVDEUVD-2022-6167
This affects all versions of package mout. The deepFillIn function can be used to 'fill missing properties recursively', while the deepMixIn mixes objects into the target object, recursively mixing existing child objects as well. In both cases, the key used to access the target object recursively is not checked, leading to exploiting this vulnerability. Note: This vulnerability derives from an incomplete fix of CVE-2020-7792.
- Record
EUVD-2022-6167- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vvv8-xw5f-3f88
Prototype Pollution in mout
This affects all versions of package mout. The deepFillIn function can be used to 'fill missing properties recursively', while the deepMixIn mixes objects into the target object, recursively mixing existing child objects as well. In both cases, the key used to access the target object recursively is not checked, leading to exploiting this vulnerability. Note: This vulnerability derives from an incomplete fix of CVE-2020-7792.
- Record
GHSA-vvv8-xw5f-3f88- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1321
- Updated
- 2026-11-02
NVD
This affects all versions of package mout. The deepFillIn function can be used to 'fill missing properties recursively', while the deepMixIn mixes objects into the target object, recursively mixing existing child objects as well. In both cases, the key used to access the target object recursively is not checked, leading to exploiting this vulnerability. Note: This vulnerability derives from an incomplete fix of CVE-2020-7792.
- Record
CVE-2022-21213- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-1321
- Updated
- 2026-11-02
OSVGHSA-vvv8-xw5f-3f88
Prototype Pollution in mout
This affects all versions of package mout. The deepFillIn function can be used to 'fill missing properties recursively', while the deepMixIn mixes objects into the target object, recursively mixing existing child objects as well. In both cases, the key used to access the target object recursively is not checked, leading to exploiting this vulnerability. Note: This vulnerability derives from an incomplete fix of CVE-2020-7792.
- Record
GHSA-vvv8-xw5f-3f88- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1321
- Updated
- 2026-11-02
OSVCLSA-2026-1773101697 No score
TuxCare security update for mout (1 CVE)
TuxCare rebuilt mout to address 1 CVE. Fixed in 0.9.1-tuxcare.1.
- Record
CLSA-2026-1773101697- Updated
- 2026-11-02
OSVCLSA-2026-1773620216 No score
TuxCare security update for mout (2 CVEs)
TuxCare rebuilt mout to address 2 CVEs. Fixed in 0.11.0-tuxcare.1.
- Record
CLSA-2026-1773620216- Updated
- 2026-11-02
OSVCLSA-2026-1789161495 No score
TuxCare security update for mout (1 CVE)
TuxCare rebuilt mout to address 1 CVE. Fixed in 0.11.1-tuxcare.2.
- Record
CLSA-2026-1789161495- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
moutnpm |
through 1.2.3 | 1.2.4 |
moutTuxCare:npm |
0.9.1-tuxcare.0 up to 0.9.1-tuxcare.1, plus listed versions 0.9.1 |
0.9.1-tuxcare.1 |
moutTuxCare:npm From an advisory covering 2 CVEs |
0.11.0-tuxcare.0 up to 0.11.0-tuxcare.1, plus listed versions 0.11.0 |
0.11.0-tuxcare.1 |
moutTuxCare:npm |
0.11.1-tuxcare.0 up to 0.11.1-tuxcare.2, plus listed versions 0.11.10.11.1-tuxcare.1 |
0.11.1-tuxcare.2 |
moutnpm |
before 1.2.4 | 1.2.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, 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-2022-21213 is a high vulnerability (CVSS 7.5) in Moutjs Mout, published June 17, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.15%, the 82nd percentile. Fixed in mout 1.2.4.