CVE-2026-10051Public exploitNetwork attack vector

Information disclosure via retained HTTP trailers

Published Jul 14, 2026 · Updated Jul 14, 2026

Information disclosure in Eclipse Jetty 12.0.0 through 12.0.35 and 12.1.0 through 12.1.9 allows remote attackers to read stale HTTP trailers. HttpConnection keeps its connection-scoped _trailers field after messageComplete(), so parsedTrailer() data from one HTTP/1.1 request is attached to later requests. Exploitation requires HTTP/1.1 keep-alive reuse and an application that reads trailers; disclosure is confined to trailer values retained on the same connection.

CVSS severity6.9
Medium
EPSS probability0.30%
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 Jetty 12.0.0 through 12.0.35 and 12.1.0 through 12.1.9 allows remote attackers to read stale HTTP trailers. HttpConnection keeps its connection-scoped _trailers field after messageComplete(), so parsedTrailer() data from one HTTP/1.1 request is attached to later requests. Exploitation requires HTTP/1.1 keep-alive reuse and an application that reads trailers; disclosure is confined to trailer values retained on the same connection.

The record

CVE
CVE-2026-10051
Published
Jul 14, 2026
Updated
Jul 14, 2026
Vendor
The Eclipse Foundation
Product
Eclipse Jetty
Classifications
CWE-200, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 2026Record 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=12.0.0 <=12.0.35
  2. Affected versionversion=12.1.0 <=12.1.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Eclipse Jettyversion=12.0.0 <=12.0.35; version=12.1.0 <=12.1.9

Published CVSS scores

6.9Eclipse FoundationCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/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

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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-200Exposure of Sensitive Information to an Unauthorized Actor
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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