CVE-2021-23419
Prototype Pollution
This affects the package open-graph before 0.2.6. The function parse could be tricked into adding or modifying properties of Object.prototype using a proto or constructor payload.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Prototype Pollution
This affects the package open-graph before 0.2.6. The function parse could be tricked into adding or modifying properties of Object.prototype using a proto or constructor payload.
- Record
CVE-2021-23419- CVSS 3.1
- 7.3 High
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 - Updated
- 2026-11-02
EUVDEUVD-2021-2057
This affects the package open-graph before 0.2.6. The function parse could be tricked into adding or modifying properties of Object.prototype using a proto or constructor payload.
- Record
EUVD-2021-2057- CVSS 3.1
- 7.3 High
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 - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g452-6rfc-vrvx
Prototype Pollution in open-graph
This affects the package open-graph before 0.2.6. The function parse could be tricked into adding or modifying properties of Object.prototype using a proto or constructor payload.
- Record
GHSA-g452-6rfc-vrvx- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-915, CWE-1321
- Updated
- 2026-11-02
NVD
This affects the package open-graph before 0.2.6. The function parse could be tricked into adding or modifying properties of Object.prototype using a proto or constructor payload.
- Record
CVE-2021-23419- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-1321
- Updated
- 2026-11-02
OSV
This affects the package open-graph before 0.2.6. The function parse could be tricked into adding or modifying properties of Object.prototype using a proto or constructor payload.
- Record
CVE-2021-23419- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-g452-6rfc-vrvx
Prototype Pollution in open-graph
This affects the package open-graph before 0.2.6. The function parse could be tricked into adding or modifying properties of Object.prototype using a proto or constructor payload.
- Record
GHSA-g452-6rfc-vrvx- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-1321, CWE-915
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
open-graphnpm |
before 0.2.6 | 0.2.6 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-23419 is a high vulnerability (CVSS 7.3) in Open-graph Project Open-graph, published August 8, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.11%, the 66th percentile. Fixed in open-graph 0.2.6.