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CVE-2026-87779— Apache Syncope: AES Secret Key disclosure via log output

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是美国Apache基金会的一款集中管理用户身份、权限及访问策略的企业级身份治理平台。 Apache Syncope 3.0.15版本至3.0.16版本、4.0.3版本至4.0.7版本和4.1.0-M0版本至4.1.2版本存在日志信息泄露漏洞，该漏洞源于当配置了非标准长度（非16/24/32字节）的AES密钥时，Syncope会用随机字符填充提供的值，并将生成的密钥值记录到日志中，可能导致敏感信息泄露。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.43% · P37 Updated Sep 15, 2026

Possible ATT&CK Techniques 2 AI

T1190 · Exploit Public-Facing Application T1041 · Exfiltration Over C2 Channel

Affected Version Matrix 3

Vendor	Product	Version Range	Status
Apache Software Foundation	Apache Syncope	`3.0.15≤ 3.0.16`	affected
		`4.0.3≤ 4.0.7`	affected
		`4.1.0-M0≤ 4.1.2`	affected

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I. Basic Information for CVE-2026-87779

Vulnerability Information

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Vulnerability Title

Apache Syncope: AES Secret Key disclosure via log output

Source: CVE Program / CVE List V5

Vulnerability Description

Insertion of sensitive information into log file vulnerability in Apache Syncope. When AES key of non-standard length (not 16/24/32 bytes) is configured, Syncope will pad the provided value with random characters. The resulting key value is logged. This issue affects Apache Syncope: from 3.0.15 through 3.0.16, from 4.0.3 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

通过日志文件的信息暴露

Source: CVE Program / CVE List V5

Vulnerability Title

Apache Syncope 日志信息泄露漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Apache Software Foundation	Apache Syncope	3.0.15 ~ 3.0.16	-

II. Public POCs for CVE-2026-87779

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-87779

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Mailing List Discussions for CVE-2026-87779 (1)

🔗 CVE-2026-87779: Apache Syncope: AES Secret Key disclosure via log output-Apache Mail Archives vendor-advisory

https://www.cve.org/CVERecord?id=CVE-2026-87779

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-2026-78318		Apache Syncope: Unauthenticated reflected XSS in Console and Enduser
CVE-2026-73470		Apache Syncope: Delegating users can grant unowned Roles
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-2026-73178		Apache Syncope: JWT Access Token takeover
CVE-2026-78330		Apache Syncope: Privilege escalation for admin user via JWT authentication
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-2026-87785		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 → →

IV. Related Vulnerabilities

Same product: Apache Syncope

Same vendor: Apache Software Foundation

Same weakness: CWE-532