CVE-2026-77121Nexus Repository 3 - Denial of Service via Unbounded Maven POM Metadata Fields
Updated under an hour ago ()
Does this affect you?
It affects Sonatype Nexus Repository 3. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-770
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Sonatype
- NVD analysis
- Analyzed
- Record last updated
- Sep 2, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Sonatype Nexus Repository 3 sonatype:nexus_repository_manager | from 3.26.0 before 3.95.0 | CNA record |
sonatype nexus_repository_manager sonatype:nexus_repository_manager | from 3.26.0 before 3.95.0 | NVD |
References
- https://help.sonatype.com/en/sonatype-nexus-repository-3-95-0-release-notes.htmlpatch, release-notes, vendor-advisory
- https://support.sonatype.com/hc/en-us/articles/54635665756691/vendor-advisory, permissions-required
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.