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CVE-2026-113369

Nexus Repository 3 - Stored Cross-Site Scripting in OCI Attestations Tab

CVSS score

6.3

EPSS probability

—

Risk score

0.6

Published

2 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

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Vulnerability description

DayBreach AI Explanation

Verified against sources

CVE-2026-113369: Nexus Repository 3 Stored Cross-Site Scripting in OCI Attestations Tab

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

Sonatype Nexus Repository 3 contains a stored cross-site scripting vulnerability in the OCI Attestations tab (S0). A user account with edit permission can store script content within the artifact type field of an OCI manifest (S0).

Why does it matter?

It creates the risk where malicious code stored by an authorized user can execute inside the browser of any user opening the Attestations tab (S0).

What should be done?

  • Follow vendor advisory and apply recommended updates
  • Upgrade to Nexus Repository 3 version 3.98.0 or later
Chain of evidence and sources2 verified claims

Sonatype Nexus Repository 3, OCI Attestations sekmesinde saklı siteler arası betik çalıştırma zafiyetine açıktır.

S0 · daybreach-canonicalS1 · cvelist

Düzenleme yetkisine sahip bir hesap, OCI manifestosunun artifact type alanında betik içeriği depolayabilir.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

Sonatype Nexus Repository 3 allows a user account that can push manifests to a hosted OCI repository (a user account that holds the edit permission on that repository) to store script content in the artifact type field of an OCI manifest. The script runs in the browser of a user who opens the Attestations tab for the related image in the Browse user interface, with the permissions of the viewing user.

CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

CWE: CWE-79

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-113369 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1sonatypeNexus Repository 3 View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
6.3CVSS V4_0MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:NCVE CNA
6.3CVSS V40MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

CNA çözüm referansı

Open source
reference

Yama veya çözüm referansı

Open source
Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-113369 is associated with the following CWEs:

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-113369 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsLow
User—

Official Sources and Advisories

https://help.sonatype.com/en/sonatype-nexus-repository-3-98-0-release-notes.htmlpatchhttps://support.sonatype.com/hc/en-us/articles/56597339691027/vendor-advisory

CVSS Vector Radar Chart

6.3 / 10
Attack VectorNetworkComplexityLowPrivilegesLowUser Interact.RequiredConfidentialityLowIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow privileges
User InteractionP
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)P
Availability (Erişilebilirlik)None

Yama doğrulandı

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

S
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Weakness Type (CWE & CAPEC)

CWE-79

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CVE-2026-113369 · Nexus Repository 3 - Stored Cross-Site…