CVE-2026-73191— Apache Syncope: CAS service URL injection via Forwarded HTTP headers
Quick assessment
Affected
Apache Software Foundation Apache Syncope
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 Syncope 中的 URL 重定向至不可信站点（“开放重定向”）漏洞。 当 Syncope 的 SRA 配置为使用 CAS 认证时，目标 Apereo CAS 实例的 URL 是通过无条件地读取客户端提供的 HTTP 转发请求头来计算的。 该漏洞影响以下 Apache Syncope 版本： 3.0.0-M0 至 3.0.16 4.0.0-M0 至 4.0.7 4.1.0-M0 至 4.1.2 建议用户升级至 4.0.8 或 4.1.3 版本，这些版本已修复此问题。
Possible ATT&CK Techniques 1 AI
T1114 · Email Collection
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I. Basic Information for CVE-2026-73191
Vulnerability Information
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Vulnerability Title
Apache Syncope: CAS service URL injection via Forwarded HTTP headers
Source: CVE Program / CVE List V5
Vulnerability Description
URL Redirection to Untrusted Site ('Open Redirect') vulnerability in Apache Syncope.
When the Syncope SRA is configured for CAS authentication, the target Apereo CAS instance's URL is calculated by unconditionally looking at client-supplied forwarded HTTP headers.
This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2.
Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Syncope | 3.0.0-M0 ~ 3.0.16 | - |
|
II. Public POCs for CVE-2026-73191
| # | POC Description | Source Link | Shenlong Link |
|---|
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Mailing List Discussions for CVE-2026-73191 (1)
Same Patch Batch · Apache Software Foundation · 2026-09-14 · 39 CVEs total
| CVE-2026-82434 | 10.0 CRITICAL | Apache Storm Nimbus, Apache Storm Client: Disclosure of the Topology ZooKeeper Credential |
| CVE-2026-78330 | Apache Syncope: Privilege escalation for admin user via JWT authentication | |
| CVE-2026-73579 | Apache Syncope: Non-recursive Any search could skip Realms restrictions | |
| CVE-2026-75015 | Apache Syncope: Nested secrets leak cleartext into audit records readable | |
| CVE-2026-75030 | Apache Syncope: Incomplete authorization checks for Group members deprovisioning | |
| CVE-2026-77051 | Apache Syncope: SQL injection via unsanitized entityKey and opEvent in Audit Events search | |
| CVE-2026-73668 | Apache Syncope: Cross-realm disclosure of confidential ConnId bundles configuration values | |
| CVE-2026-77147 | Apache Syncope: Groovy Sandbox escape for empty CommandArgs | |
| CVE-2026-77181 | Apache Syncope: ClientApp update entitlement not effective | |
| CVE-2026-77883 | Apache Syncope: Information disclosure via one-hop JEXL navigation past the JexlContextBui | |
| CVE-2026-78318 | Apache Syncope: Unauthenticated reflected XSS in Console and Enduser | |
| CVE-2026-73470 | Apache Syncope: Delegating users can grant unowned Roles | |
| CVE-2026-78336 | Apache Syncope: OIDCC4UI provider list discloses client secrets to any authenticated user | |
| CVE-2026-82232 | Apache Syncope: SQL injection via sort parameter in Task search | |
| CVE-2026-86460 | Apache Syncope: Cypher Injection via FIQL Search on Neo4j Persistence | |
| CVE-2026-87779 | Apache Syncope: AES Secret Key disclosure via log output | |
| CVE-2026-87785 | Apache Syncope: JWT subject spoofing | |
| CVE-2026-87802 | Apache Syncope: SRA OAuth2 JWT signature verification bypass | |
| CVE-2026-68570 | Apache Doris: Authorization bypass leading to unauthorized data access | |
| CVE-2026-72524 | Apache Doris: Authorization bypass allowing a low-privilege user to read/write/drop arbitr |
Showing top 20 of 39 CVEs. View all on vendor page → →
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V. Comments for CVE-2026-73191
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