How severe is CVE-2026-53914?

CVE-2026-53914 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2026-53914 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-53914?

CVE-2026-53914 affects Jetbrains Kotlin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-53914?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-53914 have an EU (EUVD) identifier?

Yes. CVE-2026-53914 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39659.

When was CVE-2026-53914 published?

CVE-2026-53914 was published on 2026-06-26 and last updated on 2026-06-27.

CVE-2026-53914

CVE-2026-53914 is a medium-severity vulnerability in Jetbrains Kotlin with a CVSS 3.x base score of 6.7. 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-502.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39659
Weakness: CWE-502
Affected product: Jetbrains Kotlin
Published: 2026-06-26
Last modified: 2026-06-27

Description

In JetBrains Kotlin before 2.4.20 code execution was possible via unsafe deserialization in the build cache metadata

Frequently asked questions

What is CVE-2026-53914?: In JetBrains Kotlin before 2.4.20 code execution was possible via unsafe deserialization in the build cache metadata
How severe is CVE-2026-53914?: CVE-2026-53914 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2026-53914 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-53914?: CVE-2026-53914 affects Jetbrains Kotlin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-53914?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-53914 have an EU (EUVD) identifier?: Yes. CVE-2026-53914 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39659.
When was CVE-2026-53914 published?: CVE-2026-53914 was published on 2026-06-26 and last updated on 2026-06-27.

References

https://www.jetbrains.com/privacy-security/issues-fixed/

Affected products (1)

cpe:2.3:a:jetbrains:kotlin:*:*:*:*:*:*:*:*

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