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CVE-2026-76171— Apache James: SSRF filter bypass in the JMAP PushSubscription web-push client

Quick assessment

Affected
Apache Software Foundation Apache James
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 Apache James 服务器 3.9.1 版本之前，JMAP 的 webPush 功能中存在 SSRF（服务器端请求伪造）验证不当的问题，导致攻击者可能访问内部地址。建议用户升级至 3.9.1 版本，该版本已修复此问题。

AI Predicted 8.1 Difficulty: Easy
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I. Basic Information for CVE-2026-76171

Vulnerability Information
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Vulnerability Title
Apache James: SSRF filter bypass in the JMAP PushSubscription web-push client
Source: CVE Program / CVE List V5
Vulnerability Description
In Apache James server prior version 3.9.1 improper validation in JMAP webPush SSRF validation did lead to the possibility to reach internal addresses. Users are recommended to upgrade to version 3.9.1 which fixes this issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache James 3.9.0 ~ 3.9.1 -

II. Public POCs for CVE-2026-76171

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III. Intelligence Information for CVE-2026-76171

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Other References for CVE-2026-76171 (1)

Same Patch Batch · Apache Software Foundation · 2026-11-06 · 7 CVEs total

CVE-2026-85111 8.7 HIGH Apache James: Denial of service upon MIME parsing
CVE-2025-66621 Apache James: SASL OAUTHBEARER do not validate aud in JWT payload if misconfigred
CVE-2026-49939 Apache James: Negative IMAP ACL administer authorization bypass through JMAP protocol
CVE-2026-74756 Apache James: WebAdmin exposed without authentication on official Docker default
CVE-2026-76168 Apache James: ManageSieve file implementation cross-user path traversal
CVE-2026-85108 Apache James MIME4J: Denial of service due to Allocation of Resources Without Limits or Th

IV. Related Vulnerabilities

Same product: Apache James
Same vendor: Apache Software Foundation
Same weakness: CWE-918