CVE-2023-30857
@aedart/support possibly vulnerable to prototype pollution in metadata record, when using meta decorator
@aedart/support is the support package for Ion, a monorepo for JavaScript/TypeScript packages. Prior to version 0.6.1, there is a possible prototype pollution issue for the MetadataRecord, when merged with a base class' metadata object, in meta decorator from the @aedart/support package. The likelihood of exploitation is questionable, given that a class's metadata can only be set or altered when the class is decorated via meta(). Furthermore, object(s) of sensitive nature would have to be stored as metadata, before this can lead to a security impact. The issue has been patched in version 0.6.1.
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
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
@aedart/support possibly vulnerable to prototype pollution in metadata record, when using meta decorator
@aedart/support is the support package for Ion, a monorepo for JavaScript/TypeScript packages. Prior to version 0.6.1, there is a possible prototype pollution issue for the MetadataRecord, when merged with a base class' metadata object, in meta decorator from the @aedart/support package. The likelihood of exploitation is questionable, given that a class's metadata can only be set or altered when the class is decorated via meta(). Furthermore, object(s) of sensitive nature would have to be stored as metadata, before this can lead to a security impact. The issue has been patched in version 0.6.1.
- Record
CVE-2023-30857- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-1321
- Updated
- 2026-11-02
EUVDEUVD-2023-1644
@aedart/support is the support package for Ion, a monorepo for JavaScript/TypeScript packages. Prior to version 0.6.1, there is a possible prototype pollution issue for the MetadataRecord, when merged with a base class' metadata object, in meta decorator from the @aedart/support package. The likelihood of exploitation is questionable, given that a class's metadata can only be set or altered when the class is decorated via meta(). Furthermore, object(s) of sensitive nature would have to be stored as metadata, before this can lead to a security impact. The issue has been patched in version 0.6.1.
- Record
EUVD-2023-1644- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wwxh-74fx-33c6
Possible prototype pollution in metadata record, when using meta decorator
Impact
Possible prototype pollution for the MetadataRecord, when merged with a base class' metadata object, in meta decorator from the @aedart/support package.
The likelihood is questionable, given that a class' metadata can only be set or altered when the class is decorated via meta(). Furthermore, object(s) of sensitive nature would have to be stored as metadata, before this can become a vulnerability.
Patches
Has been patched in version 0.6.1.
- Record
GHSA-wwxh-74fx-33c6- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-1321
- Updated
- 2026-11-02
NVD
@aedart/support is the support package for Ion, a monorepo for JavaScript/TypeScript packages. Prior to version 0.6.1, there is a possible prototype pollution issue for the MetadataRecord, when merged with a base class' metadata object, in meta decorator from the @aedart/support package. The likelihood of exploitation is questionable, given that a class's metadata can only be set or altered when the class is decorated via meta(). Furthermore, object(s) of sensitive nature would have to be stored as metadata, before this can lead to a security impact. The issue has been patched in version 0.6.1.
- Record
CVE-2023-30857- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-1321
- Updated
- 2026-11-02
OSV
@aedart/support possibly vulnerable to prototype pollution in metadata record, when using meta decorator
@aedart/support is the support package for Ion, a monorepo for JavaScript/TypeScript packages. Prior to version 0.6.1, there is a possible prototype pollution issue for the MetadataRecord, when merged with a base class' metadata object, in meta decorator from the @aedart/support package. The likelihood of exploitation is questionable, given that a class's metadata can only be set or altered when the class is decorated via meta(). Furthermore, object(s) of sensitive nature would have to be stored as metadata, before this can lead to a security impact. The issue has been patched in version 0.6.1.
- Record
CVE-2023-30857- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-1321
- Updated
- 2026-11-02
OSVGHSA-wwxh-74fx-33c6
Possible prototype pollution in metadata record, when using meta decorator
Impact
Possible prototype pollution for the MetadataRecord, when merged with a base class' metadata object, in meta decorator from the @aedart/support package.
The likelihood is questionable, given that a class' metadata can only be set or altered when the class is decorated via meta(). Furthermore, object(s) of sensitive nature would have to be stored as metadata, before this can become a vulnerability.
Patches
Has been patched in version 0.6.1.
- Record
GHSA-wwxh-74fx-33c6- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-1321
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
@aedart/supportnpm |
before 0.6.1 | 0.6.1 |
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-2023-30857 is a low vulnerability (CVSS 3.7) in Aedart Ion, published April 28, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.48%, the 41st percentile. Fixed in @aedart/support 0.6.1.
References
github.com/aedart/ion/security/advisories/GHSA-wwxh-74fx-33c6
nvd.nist.gov/vuln/detail/CVE-2023-30857