CVE-2026-18662

Incorrect authorization in Eclipse Foundation Org.eclipse.jetty.ee11:jetty Ee11 Servlet

CVSS score

6.9

EPSS probability

—

Risk score

0.7

Published

4 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

Authorization Flaw Vulnerability in Eclipse Jetty (CVE-2026-18662)

Sources read

Source agreement

Tam uyum

Evidence confidence

%63

Short explanation

An incorrect authorization vulnerability exists in Eclipse Jetty due to security constraints not being properly combined, resulting in later http-method-omission sets overriding previous constraints.

Why does it matter?

This vulnerability can lead to authorization bypasses and cause security constraints to be improperly overridden.

What should be done?

Follow official vendor security advisories and updates
Review configurations and affected Jetty components

Chain of evidence and sources2 verified claims

Eclipse Jetty içerisinde güvenlik kısıtlamaları Jakarta Servlet Spesifikasyonuna göre düzgün bir şekilde birleştirilmemektedir.

S0 · daybreach-canonical S1 · cvelist

Sonraki http-method-omission kümeleri, aynı kümeye sahip önceki kısıtlamaları geçersiz kılmaktadır.

S0 · daybreach-canonical S2 · nvd

Show the technical text from the sources

In Eclipse Jetty, across various versions of `jetty-security`, and `jetty-eeN-security`, two or more security constraints with the same http-method-omission set, and no url-patterns, are not combined properly per Jakarta Servlet Spec. Resulting in later http-method-omission sets overriding previous constraints with the same http-method-omission set.

CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

CWE: CWE-863

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-18662 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	Eclipse Foundation	org.eclipse.jetty.ee11:jetty-ee11-servlet	View
2	Eclipse Foundation	org.eclipse.jetty.ee10:jetty-ee10-servlet	View
3	Eclipse Foundation	org.eclipse.jetty.ee9:jetty-ee9-security	View
4	Eclipse Foundation	org.eclipse.jetty.ee8:jetty-ee8-security	View
5	Eclipse Foundation	org.eclipse.jetty:jetty-security	View

Total affected vendors: 1|Products: 5

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
6.9	CVSS V40	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD
6.9	CVSS V4_0	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N	CVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-18662 is associated with the following CWEs:

CWE-863: Common Weakness Enumeration Entry CWE-863

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-18662 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsGerekmiyor

UserGerekmiyor

Official Sources and Advisories

https://github.com/jetty/jetty.project/security/advisories/GHSA-phjh-v7c6-g7mvvendor-advisory https://gitlab.eclipse.org/security/cve-assignment/-/work_items/210vendor-advisory

CVSS Vector Radar Chart

6.9 / 10

Vulnerability Scoring Details

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone required

User InteractionNone required

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)None

Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

Eclipse Foundation

Weakness Type (CWE & CAPEC)

CWE-863

Similar Vulnerabilities

9.3

CVE-2026-19863

Jetty proxy blacklist performs case-sensitive matching of case-insensitive DNS hostnames

VendorEclipse FoundationProductorg.eclipse.jetty:jetty-server+1 etkilenen

Patch status unknown4 h ago

8.8

CVE-2026-18661

Incorrect authorization in Eclipse Foundation Org.eclipse.jetty.ee11:jetty Ee11 Annotations

VendorEclipse FoundationProductorg.eclipse.jetty.ee11:jetty-ee11-annotations+4 etkilenen