How severe is CVE-2026-41603?

CVE-2026-41603 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 high, integrity high, and availability none.

Is CVE-2026-41603 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41603?

CVE-2026-41603 affects Apache Thrift. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-41603?

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.

Does CVE-2026-41603 have an EU (EUVD) identifier?

Yes. CVE-2026-41603 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26021.

When was CVE-2026-41603 published?

CVE-2026-41603 was published on 2026-04-28 and last updated on 2026-06-30.

CVE-2026-41603

CVE-2026-41603 is a high-severity vulnerability in Apache Thrift 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-297.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26021
Weakness: CWE-297
Affected product: Apache Thrift
Published: 2026-04-28
Last modified: 2026-06-30

Description

Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to upgrade to version 0.23.0, which fixes the issue.

Frequently asked questions

What is CVE-2026-41603?: Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to upgrade to version 0.23.0, which fixes the issue.
How severe is CVE-2026-41603?: CVE-2026-41603 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 high, integrity high, and availability none.
Is CVE-2026-41603 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41603?: CVE-2026-41603 affects Apache Thrift. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-41603?: 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.
Does CVE-2026-41603 have an EU (EUVD) identifier?: Yes. CVE-2026-41603 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26021.
When was CVE-2026-41603 published?: CVE-2026-41603 was published on 2026-04-28 and last updated on 2026-06-30.

References

Affected products (1)

cpe:2.3:a:apache:thrift:*:*:*:*:*:*:*:*

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