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CVE-2026-77711

Quick assessment

Affected
Eclipse Foundation Eclipse Jetty
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.

当 Jetty 的 通过正向代理（forward proxy）向服务器发起请求时，服务器可能会返回 407（代理认证必需）状态码。 客户端错误地将该 407 响应视为来自代理服务器，因此会重新发送请求，并附带 头信息。这样，该请求最终到达服务器，导致服务器能够获取到代理的认证凭据。

CVSS 8.2 · High EPSS 0.32% · P23

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 5

VendorProduct Version RangeStatus
Eclipse Foundation Eclipse Jetty 12.1.0≤ 12.1.12 affected
12.0.0≤ 12.0.38 affected
11.0.0≤ 11.0.32 affected
10.0.0≤ 10.0.32 affected
9.4.0≤ 9.4.64 affected
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I. Basic Information for CVE-2026-77711

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
When Jetty's `HttpClient` make a request to a server through a forward proxy, the server may reply with a 407 (Proxy Authentication Required). The client mistakenly interprets the 407 as coming from the proxy, so it re-sends the request with the `Proxy-Authentication` header, which arrives to the server, that now has access to the proxy credentials.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Eclipse Foundation Eclipse Jetty 12.1.0 ~ 12.1.12 -

II. Public POCs for CVE-2026-77711

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III. Intelligence Information for CVE-2026-77711

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Other References for CVE-2026-77711 (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-2026-18660 8.8 HIGH Jetty proxy blacklist performs case-sensitive matching of case-insensitive DNS hostnames
CVE-2026-18661 8.8 HIGH Eclipse Jetty 多个版本 Jakarta安全约束绕过漏洞
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-2026-102461 8.7 HIGH Eclipse Vert.x DoS漏洞：JSON Schema验证算法缺陷
CVE-2026-102475 8.7 HIGH Eclipse Vert.x 5.x HTTP代理内存溢出漏洞
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-2026-18659 6.9 MEDIUM Unauthenticated authorization bypass in ConstraintSecurityHandler - HTTP method-omission m
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 product: Eclipse Jetty
Same vendor: Eclipse Foundation
Same weakness: CWE-200

V. Comments for CVE-2026-77711

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