How severe is CVE-2021-3805?

CVE-2021-3805 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-3805 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3805?

CVE-2021-3805 primarily affects Object-path Project Object-path. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-3805?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-3805 published?

CVE-2021-3805 was published on 2021-09-17 and last updated on 2026-06-17.

CVE-2021-3805

CVE-2021-3805 is a high-severity vulnerability in Object-path Project Object-path with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Object-path Project Object-path
Published: 2021-09-17
Last modified: 2026-06-17

Description

object-path is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Frequently asked questions

What is CVE-2021-3805?: object-path is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
How severe is CVE-2021-3805?: CVE-2021-3805 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-3805 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3805?: CVE-2021-3805 primarily affects Object-path Project Object-path. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-3805?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-3805 published?: CVE-2021-3805 was published on 2021-09-17 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:object-path_project:object-path:*:*:*:*:*:node.js:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

More vulnerabilities in Object-path Project Object-path

CVE-2020-15256 — High (CVSS 7.7): A prototype pollution vulnerability has been found in `object-path` <= 0.11.4 affecting the `set()` method. The…
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CVE-2022-29823 — Critical (CVSS 10.0): Feather-Sequalize cleanQuery method uses insecure recursive logic to filter unsupported keys from the query object.…
CVE-2022-24760 — Critical (CVSS 10.0): Parse Server is an open source http web server backend. In versions prior to 4.10.7 there is a Remote Code Execution…
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