Nexus Repository 3: Weak Authentication
CVE-2026-113373 is a high-severity weak authentication vulnerability in Nexus Repository 3 from Sonatype, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists version 3.98.0 as the first without the flaw, so updating Nexus Repository 3 to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.21% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Nexus Repository 3 to 3.98.0 or a later version.
- Update Nexus Repository Manager to 3.98.0 or a later version.
- Read the advisory on help.sonatype.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Sonatype | Nexus Repository 3 | 3.86.0 up to, but not including, 3.98.0 | 3.98.0 |
| Sonatype | Nexus Repository Manager | 3.86.0 up to, but not including, 3.98.0 | 3.98.0 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 9.1 | Critical | CNA |
| CVSS 3.1 | 8.1 | High | NVD |
Official description
Sonatype Nexus Repository 3 Pro does not check the local account status when a user signs in through a configured SAML or OAuth2/OpenID Connect identity provider. A user whose account was disabled or locked by an administrator in Nexus Repository can sign in again with valid identity provider credentials for the same account, and then receives a new session with the roles of that account. The attacker needs no Nexus Repository session and no Nexus Repository privilege. The attacker needs a named account that holds valid credentials at the identity provider. The anonymous user is not part of this attack path.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Weak Authentication
The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in Nexus Repository 3
- 8.6 High severity
- 7.1 High severity
- 7.1 High severity
- 7.7 High severity
- 8.7 High severity
- 7.1 High severity
Recent Weak Authentication vulnerabilities
- 8.8 High severity
- 7.1 High severity
- 9.3 Critical severity
- 8.1 High severity
- 9.8 Critical severity
- 9.8 Critical severity
Spotted an error? Tell us.