Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%

Buy Us a Coffee

CVE-2026-77121— Nexus Repository 3 - Denial of Service via Unbounded Maven POM Metadata Fields

Quick assessment

Affected

Sonatype Nexus Repository 3

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

拥有向托管的 Maven 仓库部署构件权限的用户账户，可以上传包含超大元数据字段的 POM 文件。这会导致后续尝试列出或浏览该仓库中的组件时永久失败，直到管理员修复底层数据。仅受影响的仓库会受到影响；其他仓库以及服务器整体的健康状况保持正常。

CVSS 5.3 · Medium Updated Sep 03, 2026

Possible ATT&CK Techniques 1 AI

T1595.001 · Scanning IP Blocks

Affected Version Matrix 1

Vendor	Product	Version Range	Status
Sonatype	Nexus Repository 3	`3.26.0< 3.95.0`	affected

Get alerts for future matching vulnerabilities Log in to subscribe

Vulnerability Information

Have questions about the vulnerability? See if Shenlong's analysis helps!

View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title

Nexus Repository 3 - Denial of Service via Unbounded Maven POM Metadata Fields

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

不加限制或调节的资源分配

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Sonatype	Nexus Repository 3	3.26.0 ~ 3.95.0	`cpe:2.3:a:sonatype:nexus_repository_manager:3.26.0:::::::*`

II. Public POCs for CVE-2026-77121

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-77121

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-77121 (1)

🔗 CVE-2026-77121 Nexus Repository 3 - Denial of Service via Unbounded Maven POM Metadata Fields - 2026-09-02 – Sonatype Support vendor-advisory

Vendor Pages for CVE-2026-77121 (1)

🔗 Sonatype Nexus Repository 3.95.0 Release Notes patch

https://www.cve.org/CVERecord?id=CVE-2026-77121

Same Patch Batch · Sonatype · 2026-09-02 · 5 CVEs total

CVE-2026-77124	7.5 HIGH	Nexus Repository 3 - Script Execution Disable Setting Not Enforced
CVE-2026-77125	7.1 HIGH	Nexus Repository 3 - Incorrect Authorization on Blobstore Group Endpoints
CVE-2026-77123	6.0 MEDIUM	Nexus Repository 3 - Webhook Secret Disclosure via Capability Read API
CVE-2026-77122	5.3 MEDIUM	Nexus Repository 3 - Incorrect Authorization Allows Disclosure of Member Repository Metada

IV. Related Vulnerabilities

Same product: Nexus Repository 3

Same vendor: Sonatype

Same weakness: CWE-770

V. Comments for CVE-2026-77121

No comments yet

Goal Reached Thanks to every supporter — we hit 100%!

CVE-2026-77121— Nexus Repository 3 - Denial of Service via Unbounded Maven POM Metadata Fields

Quick assessment

Possible ATT&CK Techniques 1 AI

Affected Version Matrix 1

I. Basic Information for CVE-2026-77121

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2026-77121

III. Intelligence Information for CVE-2026-77121

Vendor Advisories for CVE-2026-77121 (1)

Vendor Pages for CVE-2026-77121 (1)

Same Patch Batch · Sonatype · 2026-09-02 · 5 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2026-77121

Leave a comment