PatchTheCVECVE-2021-23702: The package object-extend from 0.0.0 are vulnerable to Prototype Pollution via object-extend.
CVE-2021-23702 is a high-severity flaw (CVSS 7.6) affecting object-extend. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The package object-extend from 0.0.0 are vulnerable to Prototype Pollution via object-extend.
Why this priority
- High severity
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.6 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 1.4% (top 28%) |
| CISA exploited list | No |
| Weakness | CWE-1321 |
| Published | 2022-02-18 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-23702?
object-extend: upgrade to newer than 0.5.0. Exact commands for each OS are on this page.
Is CVE-2021-23702 being exploited?
CVE-2021-23702 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-23702 affect?
CVE-2021-23702 affects object-extend. Severity is high (CVSS 7.6). The package object-extend from 0.0.0 are vulnerable to Prototype Pollution via object-extend.
How urgent is CVE-2021-23702?
Priority 50/100. High severity; Public exploit reference