Security readout for executives and security teams
Plain-English summary
CVE-2021-23419 is a prototype pollution flaw in the npm open-graph package. If an application uses vulnerable versions to parse attacker-controlled metadata, crafted input can alter shared JavaScript object behavior, creating unpredictable security impact.
Executive priority
Treat as a high-priority dependency remediation when the package is used in internet-facing content ingestion. Urgency is lower if the package is absent or only parses trusted internal content.
Technical view
open-graph before 0.2.6 has a vulnerable parse function that can add or modify Object.prototype through special object keys. The source rates this high, CVSS 7.3, with low confidentiality, integrity, and availability impact components.
Likely exposure
Exposure is likely in Node.js applications that depend on open-graph below 0.2.6, directly or transitively, especially where parsed Open Graph content comes from untrusted URLs or user-controlled pages.
Exploitation context
The bundle does not show CISA KEV listing or confirmed active exploitation. The CVSS temporal vector indicates proof-of-concept maturity, but the provided sources do not establish real-world exploitation.
Researcher notes
Focus validation on dependency presence, reachable parse paths, and attacker influence over metadata source content. The provided evidence names the affected function and fixed version but does not prove active exploitation.
Mitigation direction
- Upgrade open-graph to version 0.2.6 or later.
- Regenerate and redeploy dependency lockfiles after updating the package.
- If upgrading is blocked, check Snyk and vendor guidance for supported workarounds.
- Limit parsing of untrusted Open Graph content until vulnerable deployments are remediated.
Validation and detection
- Search package manifests and lockfiles for open-graph versions below 0.2.6.
- Check SBOM and dependency scanner output for transitive open-graph usage.
- Identify routes or jobs that parse external Open Graph metadata.
- Confirm production builds include the upgraded dependency version.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2021-23419 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C3.93.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.3HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- https://snyk.io/vuln/SNYK-JS-OPENGRAPH-1536747CVE reference · x_refsource_MISC
- https://github.com/samholmes/node-open-graph/commit/a0cef507a90adaac7dbbe9c404f09a50bdefb348CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.