EUVD-2026-77437
GHSA-qx7m-8v34-28ww
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Description explicitly requires an authenticated session (PR:L not PR:N); no integrity or availability impact from secret disclosure alone.
Primary rating from Vendor (apache).
CVSS VectorVendor: apache
Lifecycle Timeline
4DescriptionCVE.org
Insertion of sensitive information into sent data vulnerability in Apache Syncope.
Any authenticated user can query for the list of available OIDC providers configured for SSO with Console and Enduser. The returned payload contains all configuration settings, including client secrets, regardless of the entitlements owned by the caller.
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.
AnalysisAI
OIDC client secret exposure in Apache Syncope enables any authenticated user to retrieve complete OIDC provider configurations - including OAuth 2.0 client secrets - via the SSO provider listing API, regardless of the caller's assigned entitlements or role. Affected versions span 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.7, and 4.1.0-M0 through 4.1.2. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The caller must hold a valid authenticated session in the Apache Syncope instance - any user account at any entitlement level suffices, including low-privilege end users with no administrative rights. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD-assigned CVSS 3.1 vector (PR:N) conflicts directly with the description, which explicitly restricts exploitation to authenticated users - the correct privilege metric is almost certainly PR:L, reducing the base score from 7.5 to approximately 6.5; this discrepancy should be verified against the Apache Syncope security team's advisory. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to Apache Syncope 4.0.8 or 4.1.3, the vendor-confirmed fix versions per the advisory at https://lists.apache.org/thread/h399sqmf4wgnfxxpd6x9lm3m672rrsjt. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all systems running Apache Syncope and confirm current versions (particularly 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.7, or 4.1.0-M0 through 4.1.2). …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Apache Syncope
View allSQL injection in Apache Syncope allows an administrator holding sufficient entitlements to execute arbitrary SQL through
Privilege escalation in Apache Syncope's identity-management engine lets a self-service user grant themselves defined Ro
SQL injection in Apache Syncope's Task search endpoint allows an authenticated administrator to execute arbitrary SQL th
Server-Side Request Forgery in Apache Syncope lets a low-privileged authenticated user abuse the Connectors and Resource
Incorrect authorization in Apache Syncope's delegated administration module allows an authenticated delegated administra
Sensitive AES key material is written in plaintext to Apache Syncope application logs under a specific misconfiguration
CSV formula injection in Apache Syncope allows authenticated low-privilege users to embed spreadsheet formula payloads i
Code execution via Groovy sandbox bypass in Apache Syncope 3.0 through 3.0.16, 4.0 through 4.0.5, and 4.1.0 allows a hig
Remote code execution in Apache Syncope's connector subsystem allows an administrator holding sufficient entitlements to
Remote code execution in Apache Syncope's workflow engine lets an administrator holding sufficient entitlements run arbi
Groovy sandbox escape in Apache Syncope's Implementations feature lets an administrator holding Implementation entitleme
Broken delegated-administration authorization in Apache Syncope's Reconciliation service lets an authenticated administr
Same technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today