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CVE Record

CVE-2026-2332: HTTP Request Smuggling via Chunked Extension Quoted-String Parsing

In Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used, similar to the "funky chunks" techniques outlined here: * https://w4ke.info/2025/06/18/funky-chunks.html * https://w4ke.info/2025/10/29/funky-chunks-2.html Jetty terminates chunk extension parsing at \r\n inside quoted strings instead of treating this as an error. POST / HTTP/1.1 Host: localhost Transfer-Encoding: chunked 1;ext="val X 0 GET /smuggled HTTP/1.1 ... Note how the chunk extension does not close the double quotes, and it is able to inject a smuggled request.

HighCVSS 7.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2026-2332 is a high-severity request smuggling flaw in Eclipse Jetty's HTTP/1.1 parsing. A specially malformed chunked request can make Jetty disagree with another HTTP component about where one request ends, potentially hiding a second request inside the connection.

Executive priority

Prioritize internet-facing Jetty applications and platforms using Red Hat-packaged Jetty. Treat this as high priority because request smuggling can bypass normal request boundaries, but current evidence here does not support claiming active exploitation.

Technical view

Jetty mishandles chunk extension quoted-string parsing by terminating at CRLF inside an unterminated quoted string instead of rejecting the request. The issue is classified as CWE-444 with CVSS 7.4. The listed affected package is Maven org.eclipse.jetty/jetty-http across Jetty 9.4.0, 10.0.0, 11.0.0, 12.0.0, and 12.1.0 lines.

Likely exposure

Exposure is most likely where Jetty directly handles HTTP/1.1 traffic, especially behind proxies, load balancers, or gateways that may parse malformed chunked requests differently. Confirm whether applications embed or depend on org.eclipse.jetty:jetty-http in the affected version lines.

Exploitation context

The source bundle does not show CISA KEV listing or confirmed active exploitation. Exploitation is network reachable and unauthenticated, but CVSS marks attack complexity high, consistent with request-smuggling conditions depending on multi-hop HTTP parsing behavior.

Researcher notes

The key parser behavior is CRLF termination inside a chunk-extension quoted string. Assess parser differentials only in controlled environments and avoid weaponized reproduction. The bundle does not provide fixed Jetty versions, so remediation status must be verified against vendor advisories.

Mitigation direction

  • Check Eclipse Jetty advisory GHSA-355h-qmc2-wpwf for fixed version guidance.
  • Apply relevant Red Hat RHSA updates where Jetty is supplied by Red Hat.
  • Inventory direct and transitive org.eclipse.jetty:jetty-http dependencies.
  • Reduce direct HTTP/1.1 exposure to vulnerable Jetty services where feasible.
  • Review proxy and gateway rules for rejection of malformed chunked requests.

Validation and detection

  • Search dependency manifests and SBOMs for org.eclipse.jetty:jetty-http.
  • Map each finding to Jetty 9.4.0, 10.0.0, 11.0.0, 12.0.0, or 12.1.0 lines.
  • Identify services where Jetty receives HTTP/1.1 through reverse proxies or load balancers.
  • Confirm vendor advisory status before declaring a version remediated.
  • Monitor logs for abnormal chunked requests and request-boundary anomalies.
Prepared
Confidence
medium
Sources
12

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-444: Exact CWE lookup

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cve · low confidence lookup

CVE-2026-2332 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
5Timeline events
2ADP providers
13Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: noTechnical Impact: total

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.4CVSS 3.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N2.25.2eclipse
7.4CVSS 3.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N2.25.2redhat-SADP

Vulnerability scoring details

Base CVSS 3.1 score

7.4High
CVSS 3.1 vector shape for CVE-2026-2332Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. ADP timelineredhat-SADP

    Made public.

  3. CVE publishedCVE Program

    The CVE record was published.

  4. ADP timelineredhat-SADP

    Reported to Red Hat.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
redhat-SADPorg.eclipse.jetty/jetty-http: HTTP request smuggling via chunked extension quoted-string parsing
other:Red Hat severity ratingcvssV3_1
  • 2026-04-14T12:01:05.768Z: Reported to Red Hat.
  • 2026-04-14T10:59:10.193Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Eclipse FoundationEclipse Jettypkg://maven/org.eclipse.jetty/jetty-http, 12.1.0, 12.0.0, 11.0.0, 10.0.0, 9.4.0unaffected
Weakness

CWE details

CWE-444

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-444 · source CWE mapping

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs