CVE-2025-11965Public exploitNetwork attack vector

Unauthenticated file disclosure via final-segment hidden check

Published Oct 22, 2025 · Updated Oct 22, 2025

Information disclosure in Eclipse Vert.x Web 4.0.0 through 4.5.21 and 5.0.0 through 5.0.4 allows remote attackers to read hidden files. StaticHandler checks only the requested file's final path segment for a leading dot, so a normal filename beneath a dot-prefixed directory is served. The application must expose StaticHandler with setIncludeHidden(false) and place sensitive files under its served root; disclosure is limited to paths whose names attackers can request.

CVSS severity6.3
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Eclipse Vert.x Web 4.0.0 through 4.5.21 and 5.0.0 through 5.0.4 allows remote attackers to read hidden files. StaticHandler checks only the requested file's final path segment for a leading dot, so a normal filename beneath a dot-prefixed directory is served. The application must expose StaticHandler with setIncludeHidden(false) and place sensitive files under its served root; disclosure is limited to paths whose names attackers can request.

The record

CVE
CVE-2025-11965
Published
Oct 22, 2025
Updated
Oct 22, 2025
Vendor
The Eclipse Foundation
Product
Vert.x
Classifications
CWE-552, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0.0 <4.5.22
  2. Affected versionversion=5.0.0 <5.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Vert.xversion=4.0.0 <4.5.22; version=5.0.0 <5.0.5

Published CVSS scores

6.3Eclipse FoundationCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-552Files or Directories Accessible to External Parties
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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