Jetty
CVE-2026-1605
HIGH
GHSA-xxh7-fcf3-rj7f
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessSend gzip-encoded HTTP request
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DeliveryGzipHandler decompresses request
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ExploitResponse remains uncompressed
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ExecutionInflater resource never released
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ImpactMemory exhaustion causes denial of service
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Resource consumption limits
MITRE ATT&CK
1 technique across 1 tactic: Impact The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Eclipse Jetty versions 12.0.0-12.0.31 or 12.1.0-12.1.5 with GzipHandler enabled processing HTTP requests with Content-Encoding: gzip header where response compression is disabled or not triggered. |
| Impact | CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. |
| Exploit ScenarioDerived | An attacker could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Eclipse Jetty 12.0.0 through 12.0.31 and 12.1.0 through 12.1.5 suffer from a denial-of-service vulnerability in GzipHandler where decompressor resources leak when processing gzip-compressed requests that generate uncompressed responses. An unauthenticated remote attacker can exhaust server memory by repeatedly sending compressed requests, causing service degradation or unavailability. No patch is currently available.
Earlier versions of this analysis (1)
In Eclipse Jetty, versions 12.0.0-12.0.31 and 12.1.0-12.0.5, class GzipHandler exposes a vulnerability when a compressed HTTP request, with Content-Encoding: gzip, is processed and the corresponding response is not compressed. [CVSS 7.5 HIGH]
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in maven
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-400 (Uncontrolled Resource Consumption). Affects Jetty. In Eclipse Jetty, versions 12.0.0-12.0.31 and 12.1.0-12.0.5, class GzipHandler exposes a vulnerability when a compressed HTTP request, with Content-Encoding: gzip, is processed and the corresponding response is not compressed.
This happens because the JDK Inflater is allocated for decompressing the request, but it is not released because the release mechanism is tied to the compressed response. In this case, since the response is not compressed, the release mechanism does not trigger, causing
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from Vendor (eclipse).
CVSS VectorVendor: eclipse
Lifecycle Timeline
2DescriptionCVE.org
In Eclipse Jetty, versions 12.0.0-12.0.31 and 12.1.0-12.0.5, class GzipHandler exposes a vulnerability when a compressed HTTP request, with Content-Encoding: gzip, is processed and the corresponding response is not compressed.
This happens because the JDK Inflater is allocated for decompressing the request, but it is not released because the release mechanism is tied to the compressed response. In this case, since the response is not compressed, the release mechanism does not trigger, causing the leak.
Executive ViewAI
Eclipse Jetty versions 12.0.0-12.0.31 and 12.1.0-12.1.5 contain a HIGH severity vulnerability in GzipHandler that could allow attackers to exploit compressed HTTP requests, potentially leading to denial of service or information disclosure. Organizations running affected Jetty versions require immediate assessment and remediation to prevent exploitation.
Disable gzip compression in GzipHandler configuration if not business-critical; implement WAF rules to detect and block malformed Content-Encoding: gzip requests; restrict Jetty service access to internal networks only using network segmentation; monitor application logs for unusual gzip-related errors; consider using an upstream reverse proxy (nginx/Apache) to filter gzip requests before reaching Jetty; enable request validation and rate limiting to mitigate potential DoS attempts.
Threat Intelligence Overview
NVD
CVE.org
EPSS
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)CVE.org
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