A reflected cross-site scripting vulnerability exists in Sonatype Nexus Repository versions 3.0.0 through 3.90.2 that allows unauthenticated remote… (CVE-2026-3438)
A reflected cross-site scripting vulnerability exists in Sonatype Nexus Repository versions 3.0.0 through 3.90.2 that allows unauthenticated remote attackers to execute arbitrary JavaScript in a victim's browser through a specially crafted URL. Exploitation requires user interaction.
AI Analysis
Technical Summary
A reflected cross-site scripting vulnerability (CWE-79) exists in Sonatype Nexus Repository versions 3.0.0 through 3.90.2. This flaw allows unauthenticated remote attackers to execute arbitrary JavaScript code in the context of a victim's browser by tricking the victim into clicking a specially crafted URL. The vulnerability requires user interaction to be exploited and impacts confidentiality and integrity with no impact on availability. The CVSS v3.1 base score is 6.1 (medium severity).
Potential Impact
Successful exploitation can lead to execution of arbitrary JavaScript in the victim's browser, potentially allowing theft of sensitive information or session tokens, or manipulation of the user interface. There is no indication of availability impact. The attacker does not require authentication but does require the victim to interact with a crafted URL.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, users should be cautious about clicking untrusted URLs that reference the Nexus Repository interface.
A reflected cross-site scripting vulnerability exists in Sonatype Nexus Repository versions 3.0.0 through 3.90.2 that allows unauthenticated remote… (CVE-2026-3438)
Description
A reflected cross-site scripting vulnerability exists in Sonatype Nexus Repository versions 3.0.0 through 3.90.2 that allows unauthenticated remote attackers to execute arbitrary JavaScript in a victim's browser through a specially crafted URL. Exploitation requires user interaction.
CVSS v3.1
Score 6.1medium
Affected software
pkg:maven/org.sonatype.nexus/nexus-repositoryRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
A reflected cross-site scripting vulnerability (CWE-79) exists in Sonatype Nexus Repository versions 3.0.0 through 3.90.2. This flaw allows unauthenticated remote attackers to execute arbitrary JavaScript code in the context of a victim's browser by tricking the victim into clicking a specially crafted URL. The vulnerability requires user interaction to be exploited and impacts confidentiality and integrity with no impact on availability. The CVSS v3.1 base score is 6.1 (medium severity).
Potential Impact
Successful exploitation can lead to execution of arbitrary JavaScript in the victim's browser, potentially allowing theft of sensitive information or session tokens, or manipulation of the user interface. There is no indication of availability impact. The attacker does not require authentication but does require the victim to interact with a crafted URL.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, users should be cautious about clicking untrusted URLs that reference the Nexus Repository interface.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-mx59-6f7x-f5f2
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-3438"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aade52a55bf5e2cf5edc1d7
Added to database: 09/19/2026, 01:28:10 UTC
Last enriched: 09/19/2026, 01:55:35 UTC
Last updated: 09/19/2026, 02:34:48 UTC
Views: 6
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