How severe is CVE-2020-8203?

CVE-2020-8203 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2020-8203 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8203?

CVE-2020-8203 primarily affects Lodash. In total, 39 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-8203?

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-2020-8203 published?

CVE-2020-8203 was published on 2020-07-15 and last updated on 2026-06-17.

CVE-2020-8203

CVE-2020-8203 is a high-severity vulnerability in Lodash with a CVSS 3.x base score of 7.4. 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 7.4)
CVSS v2: 5.8
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Lodash
Published: 2020-07-15
Last modified: 2026-06-17

Description

Prototype pollution attack when using _.zipObjectDeep in lodash before 4.17.20.

Frequently asked questions

What is CVE-2020-8203?: Prototype pollution attack when using _.zipObjectDeep in lodash before 4.17.20.
How severe is CVE-2020-8203?: CVE-2020-8203 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2020-8203 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8203?: CVE-2020-8203 primarily affects Lodash. In total, 39 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-8203?: 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-2020-8203 published?: CVE-2020-8203 was published on 2020-07-15 and last updated on 2026-06-17.

References

Affected products (39)

cpe:2.3:a:lodash:lodash:*:*:*:*:*:node.js:*:*
cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.5.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.5.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_extensibility_workbench:14.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_extensibility_workbench:14.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_extensibility_workbench:14.5.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_liquidity_management:14.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_liquidity_management:14.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_liquidity_management:14.5.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_supply_chain_finance:14.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_supply_chain_finance:14.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_supply_chain_finance:14.5.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_trade_finance_process_management:14.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_trade_finance_process_management:14.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_trade_finance_process_management:14.5.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_virtual_account_management:14.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_virtual_account_management:14.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:banking_virtual_account_management:14.5.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:blockchain_platform:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_billing_and_revenue_management:7.5.0.23.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_billing_and_revenue_management:12.0.0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.11.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_session_border_controller:8.4:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_session_border_controller:9.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_session_border_controller:cz8.4:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_session_router:cz8.4:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_subscriber-aware_load_balancer:cz8.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_subscriber-aware_load_balancer:cz8.4:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_communications_broker:3.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_communications_broker:3.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_communications_broker:pcz3.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*
cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:*
cpe:2.3:a:oracle:primavera_gateway:*:*:*:*:*:*:*:*

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