How severe is CVE-2019-9710?

CVE-2019-9710 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-9710 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9710?

CVE-2019-9710 affects Webargs Project Webargs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9710?

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-2019-9710 published?

CVE-2019-9710 was published on 2019-03-12 and last updated on 2026-06-17.

CVE-2019-9710

CVE-2019-9710 is a high-severity vulnerability in Webargs Project Webargs with a CVSS 3.x base score of 8.1. 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-362.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-362
Affected product: Webargs Project Webargs
Published: 2019-03-12
Last modified: 2026-06-17

Description

An issue was discovered in webargs before 5.1.3, as used with marshmallow and other products. JSON parsing uses a short-lived cache to store the parsed JSON body. This cache is not thread-safe, meaning that incorrect JSON payloads could have been parsed for concurrent requests.

Frequently asked questions

What is CVE-2019-9710?: An issue was discovered in webargs before 5.1.3, as used with marshmallow and other products. JSON parsing uses a short-lived cache to store the parsed JSON body. This cache is not thread-safe, meaning that incorrect JSON payloads could have been parsed for concurrent requests.
How severe is CVE-2019-9710?: CVE-2019-9710 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-9710 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9710?: CVE-2019-9710 affects Webargs Project Webargs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9710?: 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-2019-9710 published?: CVE-2019-9710 was published on 2019-03-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:webargs_project:webargs:*:*:*:*:*:*:*:*

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