How severe is CVE-2026-17600?

CVE-2026-17600 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-17600 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-17600?

CVE-2026-17600 affects Sonatype Nexus Repository Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-17600?

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-2026-17600 published?

CVE-2026-17600 was published on 2026-08-07 and last updated on 2026-09-22.

CVE-2026-17600

CVE-2026-17600 is a high-severity vulnerability in Sonatype Nexus Repository Manager with a CVSS 3.x base score of 8.8. 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-613.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-613
Affected product: Sonatype Nexus Repository Manager
Published: 2026-08-07
Last modified: 2026-09-22

Description

Sonatype Nexus Repository 3 did not immediately terminate a user's active login session or revoke their cached permissions when that user's account was deleted, deactivated, or had its password changed. A user whose account was already logged in at the time of one of these actions could continue using their existing session to interact with the repository as though the account were still active, until that session independently expired. Depending on the permissions previously held, this could allow continued unauthorized access to read, modify, or delete repository content after access was intended to be revoked.

Frequently asked questions

What is CVE-2026-17600?: Sonatype Nexus Repository 3 did not immediately terminate a user's active login session or revoke their cached permissions when that user's account was deleted, deactivated, or had its password changed. A user whose account was already logged in at the time of one of these actions could continue using their existing session to interact with the repository as though the account were still active, until that session independently expired. Depending on the permissions previously held, this could allow continued unauthorized access to read, modify, or delete repository content after access was intended to be revoked.
How severe is CVE-2026-17600?: CVE-2026-17600 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-17600 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-17600?: CVE-2026-17600 affects Sonatype Nexus Repository Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-17600?: 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-2026-17600 published?: CVE-2026-17600 was published on 2026-08-07 and last updated on 2026-09-22.

References

Affected products (1)

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

More vulnerabilities in Sonatype Nexus Repository Manager

CVE-2026-5189 — Critical (CVSS 9.8): CWE-798: Use of Hard-coded Credentials in Sonatype Nexus Repository Manager versions 3.0.0 through 3.70.5 allows an…
CVE-2019-9629 — Critical (CVSS 9.8): Sonatype Nexus Repository Manager before 3.17.0 establishes a default administrator user with weak defaults (fixed…
CVE-2019-7238 — Critical (CVSS 9.8): Sonatype Nexus Repository Manager before 3.15.0 has Incorrect Access Control.
CVE-2017-17717 — Critical (CVSS 9.8): Sonatype Nexus Repository Manager through 2.14.5 has weak password encryption with a hardcoded CMMDwoV value in the…
CVE-2026-17603 — High (CVSS 8.8): Nexus Repository 3 did not sufficiently restrict which HikariCP connection-pool properties could be set through the…
CVE-2026-3199 — High (CVSS 8.8): A vulnerability in the task management component of Sonatype Nexus Repository versions 3.22.1 through 3.90.2 allows an…

All CVEs affecting Sonatype Nexus Repository Manager →

Other CWE-613 (Insufficient Session Expiration) vulnerabilities

CVE-2024-8888 — Critical (CVSS 10.0): An attacker with access to the network where CIRCUTOR Q-SMT is located in its firmware version 1.0.4, could steal the…
CVE-2026-79313 — Critical (CVSS 9.8): webpy web.py 0.76 is vulnerable to Insufficient Session Expiration. The application's session management relies on…
CVE-2026-82311 — Critical (CVSS 9.8): Apache Airflow FAB provider: resetting a user's password does not delete that user's existing database-backed sessions,…
CVE-2026-84480 — Critical (CVSS 9.8): WWBN AVideo fails to validate password recovery token expiration in userRecoverPassSave.json.php, allowing attackers to…
CVE-2026-14950 — Critical (CVSS 9.8): An unauthenticated remote attacker in possession of a valid session identifier is able to continue using the session…
CVE-2026-46455 — Critical (CVSS 9.8): Insufficient Session Expiration vulnerability in Apache Camel Keycloak Component. The camel-keycloak security helper…

Browse all CWE-613 (Insufficient Session Expiration) vulnerabilities →