Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-103866— Apache Sling Engine: Hand-rolled parameter parser diverges from RFC/container parsing, enabling smuggling

Quick assessment

Affected
Apache Software Foundation Apache Sling Engine
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 Sling 引擎存在 HTTP 请求/响应走私（HTTP Request/Response smuggling）漏洞，其根源在于对 HTTP 请求的解析不一致。该引擎的查询参数/表单解析器会接受非标准的百分号转义序列和错误的字符集，并在遇到此类错误时仍继续处理请求。 此漏洞影响 Apache Sling 引擎 3.0.4 之前的所有版本。 建议用户升级至 3.0.4 版本，该版本已修复此问题。

AI Predicted 8.8 Difficulty: Moderate

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-103866

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Apache Sling Engine: Hand-rolled parameter parser diverges from RFC/container parsing, enabling smuggling
Source: CVE Program / CVE List V5
Vulnerability Description
Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Apache Sling Engine. The engine's query/form parser accepts non-standard percent-escapes, wrong charsets, and continues request processing on such errors. This issue affects Apache Sling Engine: before 3.0.4. Users are recommended to upgrade to version 3.0.4, which fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
解释冲突
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Sling Engine 0 ~ 3.0.4 -

II. Public POCs for CVE-2026-103866

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-103866

请登录查看更多情报信息。

Other References for CVE-2026-103866 (1)

Same Patch Batch · Apache Software Foundation · 2026-11-05 · 58 CVEs total

CVE-2026-73098 10.0 CRITICAL Apache Juneau: Unsafe reflection allows attacker-controlled class initialization during pa
CVE-2026-73099 10.0 CRITICAL Apache Juneau: Cross-site request forgery via default-enabled content query-parameter body
CVE-2026-73100 10.0 CRITICAL Apache Juneau: Sensitive request headers logged in cleartext by the default request logger
CVE-2026-73101 10.0 CRITICAL Apache Juneau: Internal exception class and message disclosed via error response header an
CVE-2026-73116 10.0 CRITICAL Apache Juneau: REST client forwards credentials to a different origin when following HTTP
CVE-2026-73117 10.0 CRITICAL Apache Juneau: Response header CRLF injection and open redirect when applications set head
CVE-2026-96677 10.0 CRITICAL Apache Juneau: Cross-site scripting via unescaped request variables in HTML-doc chrome
CVE-2026-121489 10.0 CRITICAL Apache Juneau: Path traversal in DirectoryResource allows reading files outside the config
CVE-2026-73095 8.7 HIGH Apache Juneau: Denial of service via unbounded memory allocation in parsers and REST reque
CVE-2026-103864 Apache Sling Engine: Request-derived values reach log sinks without CR/LF neutralization
CVE-2026-97355 Apache OFBiz: Hard-coded Credentials in AdminServer Enable Unauthenticated Denial of Servi
CVE-2026-109837 Apache OFBiz: Authorization Bypass Through User-Controlled Key in Order Returns Enables Cr
CVE-2026-109129 Apache OFBiz: Authorization Bypass Through User-Controlled Key in OrderServices Enables Un
CVE-2026-105461 Apache OFBiz: Missing authorization in updateOrderItems allows view-only users to modify o
CVE-2026-105330 Apache OFBiz: Use of Hard-coded Cryptographic Key in JWT Token Authentication Enables Unau
CVE-2026-105325 Apache OFBiz: Missing authorization in payment application services allows view-only users
CVE-2026-100228 Apache OFBiz: Improper Input Validation in Order Returns Enables Unauthorized Refund Price
CVE-2026-100168 Apache OFBiz: Missing Authorization vulnerability
CVE-2026-97356 Apache OFBiz: Insufficiently Protected Credentials in ViewFile Enable Authentication Bypas
CVE-2026-92887 Apache OFBiz: REST API authentication bypassed by default when the auth attribute is omitt

Showing top 20 of 58 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Apache Sling Engine
Same vendor: Apache Software Foundation
Same weakness: CWE-436