CVE-2021-47986 json
Parse Server - Unreviewed Code Execution via Malicious Version Tags
published 2021-09-07 5 y ago modified 2026-11-02 6 d ago also BIT-parse-2021-47986 , BIT-parse-2021-47987 , CVE-2021-47987 , EUVD-2021-34852 , GHSA-593v-wcqx-hq2w
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 7%
- public exploits
- 0
- none known
Summary
Parse Server before 4.10.0 contains a supply chain vulnerability where incorrect version tags were pushed to the repository linking to unreviewed code in a personal fork. Attackers could exploit this by specifying affected version tags in dependency declarations to execute unreviewed and potentially malicious code.
Patch / fix
- npm parse-server 4.5.2, 4.10.0
- bitnami parse 4.10.0
- parse-community parse-server 4.10.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 4 mo ago
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.7 | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 7.7 | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | parse-server | >=4.0.0, <4.5.2 >=4.6.0, <4.10.0 |
4.5.2 4.10.0 |
| bitnami | parse | <4.10.0 |
4.10.0 |
Affected products
- parse-community parse-server
Classification
References
-
github.com
/parse-community/parse-server/security/advisories/GHSA-593v-wcqx-hq2w
vendor-advisory, web, advisory
-
vulncheck.com
/advisories/parse-server-unreviewed-code-execution-via-malicious-version-tags
third-party-advisory, web, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-47986
advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2021-47987
advisory, web
-
github.com
/parse-community/parse-server
package
-
vulncheck.com
/advisories/parse-server-arbitrary-code-execution-via-malicious-version-tags
web
Sources
- CVE List CVE-2021-47986
- GitHub Advisory GHSA-593v-wcqx-hq2w
- NVD CVE-2021-47986
- OSV BIT-parse-2021-47986
- OSV BIT-parse-2021-47987
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