How severe is CVE-2021-31898?

CVE-2021-31898 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 high, integrity none, and availability none.

Is CVE-2021-31898 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31898?

CVE-2021-31898 affects Jetbrains Webstorm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31898?

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-2021-31898 published?

CVE-2021-31898 was published on 2021-05-11 and last updated on 2026-06-17.

CVE-2021-31898

CVE-2021-31898 is a high-severity vulnerability in Jetbrains Webstorm 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-319.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Jetbrains Webstorm
Published: 2021-05-11
Last modified: 2026-06-17

Description

In JetBrains WebStorm before 2021.1, HTTP requests were used instead of HTTPS.

Frequently asked questions

What is CVE-2021-31898?: In JetBrains WebStorm before 2021.1, HTTP requests were used instead of HTTPS.
How severe is CVE-2021-31898?: CVE-2021-31898 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 high, integrity none, and availability none.
Is CVE-2021-31898 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31898?: CVE-2021-31898 affects Jetbrains Webstorm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31898?: 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-2021-31898 published?: CVE-2021-31898 was published on 2021-05-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jetbrains:webstorm:*:*:*:*:*:*:*:*

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