CVE-2021-47986 (GCVE-0-2021-47986)

Vulnerability from cvelistv5 – Published: 2026-06-25 21:41 – Updated: 2026-06-26 10:38
VLAI
Title
Parse Server - Unreviewed Code Execution via Malicious Version Tags
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.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-26 10:37 UTC
CWE
  • CWE-494 - Download of Code Without Integrity Check
References
Impacted products
Vendor Product Version
parse-community parse-server Affected: 0 , < 4.10.0 (semver)
Unaffected: 4.10.0 (semver)
    cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*
Create a notification for this product.
Date Public
2021-09-03 00:00
Show details on NVD website

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                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-494",
                  "description": "Download of Code Without Integrity Check",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-06-25T21:41:01.502Z",
            "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
            "shortName": "VulnCheck"
          },
          "references": [
            {
              "name": "GitHub Security Advisory (GHSA-593v-wcqx-hq2w)",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-593v-wcqx-hq2w"
            },
            {
              "name": "VulnCheck Advisory: Parse Server - Unreviewed Code Execution via Malicious Version Tags",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://www.vulncheck.com/advisories/parse-server-unreviewed-code-execution-via-malicious-version-tags"
            }
          ],
          "title": "Parse Server - Unreviewed Code Execution via Malicious Version Tags",
          "x_generator": {
            "engine": "vulncheck-endgame"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "assignerShortName": "VulnCheck",
        "cveId": "CVE-2021-47986",
        "datePublished": "2026-06-25T21:41:01.502Z",
        "dateReserved": "2026-06-21T02:08:33.231Z",
        "dateUpdated": "2026-06-26T10:38:03.663Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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