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CVE-2026-85111— Apache James: Denial of service upon MIME parsing

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.

Apache James Mime4J 库在 0.8.15 版本之前存在“无限制或无节流机制的资源分配”漏洞，攻击者可利用该漏洞在解析 MIME 消息时引发拒绝服务（DoS）攻击。 建议用户升级至 Apache James 服务器 3.9.1 版本，该版本依赖已修复此问题的 MIME4J 0.8.15 版本。 有关详细信息，请参阅 Apache James MIME4J 库中的 CVE-2026-85108。

CVSS 8.7 · High

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-85111

Vulnerability Information
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Vulnerability Title
Apache James: Denial of service upon MIME parsing
Source: CVE Program / CVE List V5
Vulnerability Description
Allocation of Resources Without Limits or Throttling in Apache James Mime4J library prior version 0.8.15 allows Denial of Service upon parsing Mime messages. Users are recommended to upgrade to Apache James server 3.9.1 that relies on fixed MIME4J 0.8.15 which addresses the issue. See CVE-2026-85108 in Apache James MIME4J library.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache James 0 ~ 3.9.1 -
Apache Software Foundation Apache James 0 ~ 3.9.1 -

II. Public POCs for CVE-2026-85111

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III. Intelligence Information for CVE-2026-85111

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Other References for CVE-2026-85111 (2)

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

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-2026-76171 Apache James: SSRF filter bypass in the JMAP PushSubscription web-push client
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-770