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CVE-2026-18659— Unauthenticated authorization bypass in ConstraintSecurityHandler - HTTP method-omission matched by substring

Quick assessment

Affected
Eclipse Foundation
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Eclipse Jetty 中， 、 以及 等多个版本存在安全漏洞。攻击者可以通过使用已定义 HTTP 方法的子串，绕过 Jakarta 规范中通过 配置所定义的安全约束。

CVSS 6.9 · Medium EPSS 0.43% · P36

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 10

VendorProduct Version RangeStatus
Eclipse Foundation None 12.1.0≤ 12.1.11 affected
12.1.0≤ 12.1.11 affected
12.0.0≤ 12.0.38 affected
12.1.0≤ 12.1.11 affected
12.0.0≤ 12.0.38 affected
12.1.0≤ 12.1.11 affected
12.0.0≤ 12.0.38 affected
11.0.0≤ 11.0.32 affected
… +2 more rows
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I. Basic Information for CVE-2026-18659

Vulnerability Information
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Vulnerability Title
Unauthenticated authorization bypass in ConstraintSecurityHandler - HTTP method-omission matched by substring
Source: CVE Program / CVE List V5
Vulnerability Description
In Eclipse Jetty, across various versions of `jetty-security`, and `jetty-eeN-security`, and `jetty-eeN-servlet`, the Jakarta Spec constraints defined as `http-method-omission` can be bypassed by using substrings of the defined HTTP Methods.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Eclipse Foundation - 12.1.0 ~ 12.1.11 -
Eclipse Foundation - 12.1.0 ~ 12.1.11 -
Eclipse Foundation - 12.1.0 ~ 12.1.11 -
Eclipse Foundation - 12.1.0 ~ 12.1.11 -
Eclipse Foundation - 11.0.0 ~ 11.0.32 -

II. Public POCs for CVE-2026-18659

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III. Intelligence Information for CVE-2026-18659

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Other References for CVE-2026-18659 (2)

Same Patch Batch · Eclipse Foundation · 2026-10-15 · 25 CVEs total

CVE-2026-19863 9.3 CRITICAL EthereumAuthenticator未授权访问漏洞
CVE-2026-102469 9.2 CRITICAL CVE-2026-102469
CVE-2026-18661 8.8 HIGH Eclipse Jetty 多个版本 Jakarta安全约束绕过漏洞
CVE-2026-18660 8.8 HIGH Jetty proxy blacklist performs case-sensitive matching of case-insensitive DNS hostnames
CVE-2026-102475 8.7 HIGH Eclipse Vert.x 5.x HTTP代理内存溢出漏洞
CVE-2026-102461 8.7 HIGH Eclipse Vert.x DoS漏洞：JSON Schema验证算法缺陷
CVE-2026-102477 8.7 HIGH Vert.x gRPC-server配置压缩限制绕过致压缩炸弹攻击
CVE-2026-102467 8.7 HIGH Vert.x 4.0.0-5.2.0空字节限制致DDoS
CVE-2026-102462 8.2 HIGH Vert.x MSSQL Client多个版本OOM漏洞
CVE-2026-102466 8.2 HIGH Eclipse Vert.x MySQL客户端拒绝服务漏洞
CVE-2026-102464 8.2 HIGH Eclipse Vert.x MQTT未受限存储致OOM
CVE-2026-102463 8.2 HIGH Eclipse Vertx多版本vertx-pg-client数组解码内存耗尽漏洞
CVE-2026-103223 8.2 HIGH Eclipse Vert.x 4-5 PostgreSQL客户端缓冲区溢出致OOM
CVE-2026-103224 8.2 HIGH Vert.x MySQL客户端多个版本存在OOM漏洞
CVE-2026-102465 8.2 HIGH Vert.x MySQL Client越界数组分配致OOM漏洞
CVE-2026-76184 8.2 HIGH Eclipse Jetty HttpClient重定向认证头泄露漏洞
CVE-2026-77711 8.2 HIGH Jetty HttpClient代理凭据泄露漏洞
CVE-2026-76182 6.9 MEDIUM Jetty TryPathsHandler/Filter路径解析逻辑漏洞
CVE-2026-18662 6.9 MEDIUM Jetty安全组件URL模式为空时约束冲突漏洞
CVE-2026-19864 5.6 MEDIUM Eclipse Jetty会话认证凭据明文存储漏洞

Showing top 20 of 25 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: Eclipse Foundation
Same weakness: CWE-863

V. Comments for CVE-2026-18659

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