Security advisory
Parse Server before 4.10.0 was affected by a supply chain incident in which incorrect version tags were pushed to the official repository pointing to an unreviewed personal fork of a contributor with write access. No releases were published with these tags; a project was exposed only if it defined a git-based dependency referencing one of the affected tags (for example, parse-server#4.9.3). The code behind the tags was not reviewed or approved, and although no malicious code was identified, the introduction of security vulnerabilities could not be ruled out.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-47986, CVE-2021-47987
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:04 UTC · Revision 1
Source evidence
Parse Server before 4.10.0 was affected by a supply chain incident in which incorrect version tags were pushed to the official repository pointing to an unreviewed personal fork of a contributor with write access. No releases were published with these tags; a project was exposed only if it defined a git-based dependency referencing one of the affected tags (for example, parse-server#4.9.3). The code behind the tags was not reviewed or approved, and although no malicious code was identified, the introduction of security vulnerabilities could not be ruled out.
osv:CVE-2021-47987
Complete source record
{
"id": "d75cb123f32cd0fc79d3a78b200f46e053154814c581e41f0d1fd07f6932ae24",
"url": "https://osv.dev/vulnerability/CVE-2021-47987",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-47987",
"summary": "Parse Server before 4.10.0 was affected by a supply chain incident in which incorrect version tags were pushed to the official repository pointing to an unreviewed personal fork of a contributor with write access. No releases were published with these tags; a project was exposed only if it defined a git-based dependency referencing one of the affected tags (for example, parse-server#4.9.3). The code behind the tags was not reviewed or approved, and although no malicious code was identified, the introduction of security vulnerabilities could not be ruled out.",
"evidence": "osv:CVE-2021-47987",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2021-47987",
"aliases": [
"BIT-parse-2021-47986",
"BIT-parse-2021-47987",
"CVE-2021-47986",
"CVE-2021-47987",
"GHSA-593v-wcqx-hq2w"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "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": [
{
"ranges": [
{
"repo": "https://github.com/parse-community/parse-server",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "7e1da90bb2dd543ee998a76e9a6f7426e14d200b"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "4.10.0"
}
],
"source": "DESCRIPTION"
}
]
}
}
],
"versions": [
"4.5.2",
"4.5.0",
"4.4.0",
"4.3.0",
"4.2.0",
"4.1.0",
"4.0.2",
"4.0.1",
"4.0.0",
"3.10.0",
"3.9.0",
"3.8.0",
"3.7.2",
"3.7.1",
"3.7.0",
"3.6.0",
"3.5.0",
"3.4.0",
"3.4.1",
"3.3.0",
"3.2.3",
"3.2.2",
"3.2.1",
"3.2.0",
"3.1.3",
"3.1.2",
"3.1.1",
"3.1.0",
"3.0.0",
"2.8.2",
"2.8.0",
"2.7.4",
"2.7.3",
"2.7.2",
"2.7.1",
"2.7.0",
"2.6.5",
"2.6.4",
"2.6.3",
"2.6.2",
"2.6.1",
"2.6.0",
"2.5.3",
"2.5.2",
"2.5.1",
"2.5.0",
"2.4.2",
"2.4.1",
"2.4.0",
"2.3.8",
"2.3.7",
"2.3.6",
"2.3.5",
"2.3.4",
"2.3.3",
"2.3.2",
"2.3.1",
"2.2.25",
"2.2.25-beta.1",
"2.2.24",
"2.2.23",
"2.2.22",
"2.2.21",
"2.2.20",
"2.2.19",
"2.2.18",
"2.2.17",
"2.2.16",
"2.2.15",
"2.2.14",
"2.2.13",
"2.2.12",
"2.2.11",
"2.2.10",
"2.2.9",
"2.2.8",
"2.2.7",
"2.2.6",
"2.2.5",
"2.2.4",
"2.2.3",
"2.2.2",
"2.2.1",
"2.2.0",
"2.1.6",
"2.1.5",
"2.1.4",
"2.1.3",
"2.1.2",
"2.1.1",
"2.1.0",
"2.0.8",
"2.0.7",
"2.0.3",
"2.0.6",
"2.0.5",
"2.0.4",
"2.0.2",
"2.0.1",
"2.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47987.json"
}
}
],
"modified": "2026-10-20T10:55:11.542718954Z",
"provider": "osv",
"references": [
"https://github.com/parse-community/parse-server/security/advisories/GHSA-593v-wcqx-hq2w",
"https://www.vulncheck.com/advisories/parse-server-arbitrary-code-execution-via-malicious-version-tags"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-47986",
"evidence": "/aliases"
},
{
"value": "CVE-2021-47987",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 387040,
"published_at": "2026-06-25T22:16:58.373+00:00"
}