01 Record
CVE-2021-43138
In Async before 2.6.4 and 3.x before 3.2.2, a malicious user can obtain privileges via the mapValues() method, aka lib/internal/iterator.js createObjectIterator prototype pollution.
UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector
02 Description
In Async before 2.6.4 and 3.x before 3.2.2, a malicious user can obtain privileges via the mapValues() method, aka lib/internal/iterator.js createObjectIterator prototype pollution.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 3.34% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 88.6% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2022-04-06 00:00Z4 YR AGO
- Last updated
- 2024-08-04 03:47Z2 YR AGO
- Reserved
- 2021-11-01
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')Variant
- Data version
- 5.1
- Document digest
- d61b39637ccf20ddd245cb7ffd5fbc7a55f5b95d7ea6ed4ce1000886af28db83
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/caolan/async/blob/master/lib/internal/iterator.js
- github.comhttps://github.com/caolan/async/blob/master/lib/mapValuesLimit.js
- jsfiddle.nethttps://jsfiddle.net/oz5twjd9/
- github.comhttps://github.com/caolan/async/commit/e1ecdbf79264f9ab488c7799f4c76996d5dca66d
- github.comhttps://github.com/caolan/async/blob/v2.6.4/CHANGELOG.md#v264
- github.comhttps://github.com/caolan/async/pull/1828
- github.comhttps://github.com/caolan/async/compare/v2.6.3...v2.6.4
- lists.fedoraproject.orgFEDORA-2023-ce8943223chttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTEUUTNIEBHGKUKKLNUZSV7IEP6IP3Q3/
- lists.fedoraproject.orgFEDORA-2023-18fd476362https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UM6XJ73Q3NAM5KSGCOKJ2ZIA6GUWUJLK/
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20240621-0006/