How severe is CVE-2019-15631?

CVE-2019-15631 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-15631 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15631?

CVE-2019-15631 primarily affects Mulesoft Api Gateway. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-15631?

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

When was CVE-2019-15631 published?

CVE-2019-15631 was published on 2019-12-02 and last updated on 2026-06-17.

CVE-2019-15631

CVE-2019-15631 is a critical-severity vulnerability in Mulesoft Api Gateway with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mulesoft Api Gateway
Published: 2019-12-02
Last modified: 2026-06-17

Description

Remote Code Execution vulnerability in MuleSoft Mule CE/EE 3.x and API Gateway 2.x released before October 31, 2019 allows remote attackers to execute arbitrary code.

Frequently asked questions

What is CVE-2019-15631?: Remote Code Execution vulnerability in MuleSoft Mule CE/EE 3.x and API Gateway 2.x released before October 31, 2019 allows remote attackers to execute arbitrary code.
How severe is CVE-2019-15631?: CVE-2019-15631 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-15631 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-15631?: CVE-2019-15631 primarily affects Mulesoft Api Gateway. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-15631?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-15631 published?: CVE-2019-15631 was published on 2019-12-02 and last updated on 2026-06-17.

References

https://help.salesforce.com/articleView?id=000351827&language=en_US&type=1&mode=1

Affected products (3)

cpe:2.3:a:mulesoft:api_gateway:*:*:*:*:*:*:*:*
cpe:2.3:a:mulesoft:mule_runtime:*:*:*:*:*:*:community:*
cpe:2.3:a:mulesoft:mule_runtime:*:*:*:*:*:enterprise:*:*

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CVE-2019-15630 — High (CVSS 7.5): Directory Traversal in APIkit, HTTP connector, and OAuth2 Provider components in MuleSoft Mule Runtime 3.2.0 and higher…

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