CVE-2021-3666 json
Prototype Pollution in fiznool/body-parser-xml
published 2021-09-13 5 y ago modified 2026-06-17 4 mo ago also GHSA-2ghc-6v89-pw9j , EUVD-2021-1949
- cvss
- 7.6
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 70%
- public exploits
- 0
- none known
Summary
body-parser-xml is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Patch / fix
- npm body-parser-xml 2.0.3
- fiznool fiznool/body-parser-xml 2.0.3
Exploit prediction
1.30% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- huntr.dev https://huntr.dev/bounties/1-other-fiznool/body-parser-xml referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 7.6 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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 | 3.0 | 7.6 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | body-parser-xml | <2.0.3 |
2.0.3 |
Affected products
- fiznool fiznool/body-parser-xml
Classification
References
-
github.com
/fiznool/body-parser-xml/commit/d46ca622560f7c9a033cd9321c61e92558150d63
web, patch, third-party-advisory
-
huntr.dev
/bounties/1-other-fiznool/body-parser-xml
web, exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-3666
advisory
-
github.com
/fiznool/body-parser-xml
package
Sources
- CVE List CVE-2021-3666
- GitHub Advisory GHSA-2ghc-6v89-pw9j
- NVD CVE-2021-3666
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