CVE-2025-66518

Q: How do I fix CVE-2025-66518?

Upgrade kyuubi to 1.10.3 or later.

Q: Is CVE-2025-66518 being actively exploited?

Not that we know of. CVE-2025-66518 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.91% is the estimated probability that it will be exploited in the next 30 days. That is higher than 57% of all scored CVEs.

Q: How severe is CVE-2025-66518?

CVE-2025-66518 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2025-66518 affect?

Published advisories record a fix for kyuubi (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGH

8.8

CVSS v3

NVD

Description

Any client who can access to Apache Kyuubi Server via Kyuubi frontend protocols can bypass server-side config kyuubi.session.local.dir.allow.list and use local files which are not listed in the config. This issue affects Apache Kyuubi: from 1.6.0 through 1.10.2. Users are recommended to upgrade to version 1.10.3 or upper, which fixes the issue.

CWE-27 CWE-22Path Traversal

How to fix

Remediation Available

kyuubiNVD

Affected:>= 1.6.0, < 1.10.3Fixed in:1.10.3CVE-2025-66518derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.91%probability of exploitation in 30 days

57thpercentile

Moderate risk: more likely to be exploited than 57% of all known CVEs.

References

Third-Party Advisory1

openwall.com

Mailing List1

lists.apache.org

Related Vulnerabilities

Other CWE-27 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-23897	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2024-24809	High	8.5	54%	-	-
CVE-2023-34125	Medium	6.5	25%	-	Fix
CVE-2022-24785	High	7.5	5.5%	-	Fix
CVE-2023-50254	Critical	9.3	2.1%	-	Fix
CVE-2021-35027	High	7.5	2.0%	-	-

Common questions

How do I fix CVE-2025-66518?

Upgrade kyuubi to 1.10.3 or later.

Is CVE-2025-66518 being actively exploited?

Not that we know of. CVE-2025-66518 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.91% is the estimated probability that it will be exploited in the next 30 days. That is higher than 57% of all scored CVEs.

How severe is CVE-2025-66518?

CVE-2025-66518 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2025-66518 affect?

Published advisories record a fix for kyuubi (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-27.