How severe is CVE-2026-14646?

CVE-2026-14646 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-14646 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-14646?

CVE-2026-14646 affects Sonatype Nexus Repository Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-14646?

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-2026-14646 published?

CVE-2026-14646 was published on 2026-07-14 and last updated on 2026-09-22.

CVE-2026-14646

CVE-2026-14646 is a high-severity vulnerability in Sonatype Nexus Repository Manager with a CVSS 3.x base score of 7.7. 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-918.

Key facts

Severity: High (CVSS 3.x base score 7.7)
CVSS v4: 4.9
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Sonatype Nexus Repository Manager
Published: 2026-07-14
Last modified: 2026-09-22

Description

Nexus Repository 3 did not apply its existing Server-Side Request Forgery (SSRF) protections to HTTP redirect targets returned by proxy repository upstream servers. Any user with read access to a proxy repository backed by an attacker-controlled or compromised upstream server — including an anonymous user, if anonymous access is enabled — could receive a response from an internal network address or cloud metadata endpoint as repository content, potentially exposing sensitive information such as cloud IAM credentials.

Frequently asked questions

What is CVE-2026-14646?: Nexus Repository 3 did not apply its existing Server-Side Request Forgery (SSRF) protections to HTTP redirect targets returned by proxy repository upstream servers. Any user with read access to a proxy repository backed by an attacker-controlled or compromised upstream server — including an anonymous user, if anonymous access is enabled — could receive a response from an internal network address or cloud metadata endpoint as repository content, potentially exposing sensitive information such as cloud IAM credentials.
How severe is CVE-2026-14646?: CVE-2026-14646 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-14646 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-14646?: CVE-2026-14646 affects Sonatype Nexus Repository Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-14646?: 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-2026-14646 published?: CVE-2026-14646 was published on 2026-07-14 and last updated on 2026-09-22.

References

Affected products (1)

cpe:2.3:a:sonatype:nexus_repository_manager:*:*:*:*:*:*:*:*

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