How severe is CVE-2026-35561?

CVE-2026-35561 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-2026-35561 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35561?

CVE-2026-35561 affects Amazon Athena Odbc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35561?

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-2026-35561 have an EU (EUVD) identifier?

Yes. CVE-2026-35561 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18857.

When was CVE-2026-35561 published?

CVE-2026-35561 was published on 2026-04-03 and last updated on 2026-07-24.

CVE-2026-35561

CVE-2026-35561 is a high-severity vulnerability in Amazon Athena Odbc 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-862.

Key facts

Severity: High (CVSS 3.x base score 7.4)
CVSS v4: 9.1
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18857
Weakness: CWE-862
Affected product: Amazon Athena Odbc
Published: 2026-04-03
Last modified: 2026-07-24

Description

Insufficient authentication security controls in the browser-based authentication components in Amazon Athena ODBC driver before 2.1.0.0 might allow a threat actor to intercept or hijack authentication sessions due to insufficient protections in the browser-based authentication flows. To remediate this issue, users should upgrade to version 2.1.0.0.

Frequently asked questions

What is CVE-2026-35561?: Insufficient authentication security controls in the browser-based authentication components in Amazon Athena ODBC driver before 2.1.0.0 might allow a threat actor to intercept or hijack authentication sessions due to insufficient protections in the browser-based authentication flows. To remediate this issue, users should upgrade to version 2.1.0.0.
How severe is CVE-2026-35561?: CVE-2026-35561 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-2026-35561 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35561?: CVE-2026-35561 affects Amazon Athena Odbc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35561?: 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-2026-35561 have an EU (EUVD) identifier?: Yes. CVE-2026-35561 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18857.
When was CVE-2026-35561 published?: CVE-2026-35561 was published on 2026-04-03 and last updated on 2026-07-24.

References

Affected products (1)

cpe:2.3:a:amazon:athena_odbc:*:*:*:*:*:*:*:*

More vulnerabilities in Amazon Athena Odbc

CVE-2026-5485 — High (CVSS 7.8): OS command injection in the browser-based authentication component in Amazon Athena ODBC driver before 2.0.5.1 on Linux…
CVE-2026-35558 — High (CVSS 7.8): Improper neutralization of special elements in the authentication components in Amazon Athena ODBC driver before…
CVE-2026-35562 — High (CVSS 7.5): Allocation of resources without limits in the parsing components in Amazon Athena ODBC driver before 2.1.0.0 might…
CVE-2026-35560 — High (CVSS 7.4): Improper certificate validation in the identity provider connection components in Amazon Athena ODBC driver before…
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