CVE-2026-77121

Medium

Description

A user account with permission to deploy artifacts to a hosted Maven repository could upload a POM file containing an oversized metadata field. This causes future attempts to list or browse that repository's components to permanently fail until an administrator repairs the underlying data. Only the targeted repository is affected; other repositories and overall server health remain unaffected.

SeverityMedium

CVSS6.5

Exploit probability—

ProductSonatype Nexus Repository Manager

PublishedSep 2, 2026

First seenSep 2, 2026

Weakness typeCWE-770Allocation of resources without limits

How to fix

Update

sonatype nexus_repository_manager3.95.0 or later

Patches

help.sonatype.com/en/sonatype-nexus-repository-3-95-0-release-notes.html

Vendor advisories

support.sonatype.com/hc/en-us/articles/54635665756691/

Affected products

Product	Affected versions	Fixed in
sonatype nexus_repository_manager	3.26.0 ≤ v < 3.95.0	3.95.0

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