CVE-2021-23574 json
Prototype Pollution
published 2021-12-24 4 y ago modified 2026-06-17 4 mo ago also GHSA-c6h4-gc3f-hgjq , EUVD-2022-0557
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.2%
- EPSS 2.2% chance of exploitation in 30 days, percentile 82%
- public exploits
- 0
- none known
Summary
All versions of package js-data are vulnerable to Prototype Pollution via the deepFillIn and the set functions. This is an incomplete fix of [CVE-2020-28442](https://snyk.io/vuln/SNYK-JS-JSDATA-1023655).
Patch / fix
- js-data js-data 3.0.11
- github.com/js-data/js-data/issues/576 advisory
- github.com/js-data/js-data/issues/577 advisory
Exploit prediction
2.17% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- snyk.io https://snyk.io/vuln/SNYK-JS-JSDATA-1584361 referenced PoC, tagged "exploit" by a source, unverified
- snyk.io https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-2320790 referenced PoC, tagged "exploit" by a source, unverified
- snyk.io https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2320791 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | js-data | <=3.0.10 |
no fix listed |
Affected products
- n/a js-data
Classification
- Weakness
-
- CWE-1321 Improperly Controlled Modification of Object Prototype Attributes
References
-
github.com
/js-data/js-data/issues/576
web, issue-tracking, patch, third-party-advisory
-
github.com
/js-data/js-data/issues/577
web, issue-tracking, patch, third-party-advisory
-
snyk.io
/vuln/SNYK-JS-JSDATA-1584361
web, exploit, third-party-advisory
-
snyk.io
/vuln/SNYK-JAVA-ORGWEBJARSBOWER-2320790
web, exploit, third-party-advisory
-
snyk.io
/vuln/SNYK-JAVA-ORGWEBJARSNPM-2320791
web, exploit, third-party-advisory
-
github.com
/js-data/js-data/blob/master/dist/js-data.js%23L472
web, broken-link, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-23574
advisory
-
github.com
/js-data/js-data
package
Sources
- CVE List CVE-2021-23574
- GitHub Advisory GHSA-c6h4-gc3f-hgjq
- NVD CVE-2021-23574
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.