CVE-2026-87785

Apache Syncope: JWT subject spoofing

Authentication bypass by spoofing vulnerability in Apache Syncope. When the configured JWKS settings for internal JWT authentication are disclosed (at least protocol and key), an attacker can spoof another user's privileges after completing a successful authentication and obtaining a valid JWT. 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.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-110535

Apache Syncope: AuthProfile value escalation via self-service update

Improper Privilege Management vulnerability in Apache Syncope. AuthProfile self-updates allow non-admin users to configure impersonation for WA surrogate authentication. This issue affects Apache Syncope: from 3.0.12 through 3.0.16, from 4.0.0-M0 through 4.0.8, from 4.1.0-M0 through 4.1.3. Users are recommended to upgrade to version 4.0.9 / 4.1.4, which fix this issue.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-114364

Apache Syncope: SQL injection via unsanitized opEvent in Audit Events search

Improper neutralization of special elements used in an SQL command ('SQL injection') vulnerability in Apache Syncope. This CVE covers an incomplete fix for CVE-2026-77051: an administrator with adequate entitlements can achieve execution of arbitrary SQL via stacked queries, leveraging unsanitized opEvent parameters. Reference: https://cve.org/CVERecord?id=CVE-2026-77051 This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 through 4.0.8, from 4.1.0-M0 through 4.1.3. Users are recommended to upgrade to version 4.0.9 / 4.1.4, which fix this issue.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-109083

Apache Syncope: Remote Code Execution via Flowable JUEL expression

Improper isolation or compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements can import arbitrary BPMN process definitions via the REST API and then start the process. When a BPMN process containing a JUEL expression is imported and started, the expression is executed directly on the server, with no sandbox. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 through 4.0.8, from 4.1.0 through 4.1.3. Users are recommended to upgrade to version 4.0.9 / 4.1.4, which fix this issue by rejecting BPMN definitions including expression attributes.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-113511

Apache Syncope: Delegated administration boundaries can be bypassed for Realm update

Authorization bypass through User-Controlled key vulnerability in Apache Syncope. A delegated administrator can relocate a Realm subtree across administrative realm boundaries without permission for the destination This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 through 4.0.8, from 4.1.0-M0 through 4.1.3. Users are recommended to upgrade to version 4.0.9 / 4.1.4, which fix this issue.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-113687

Apache Syncope: RCE via ProcessGroovyMethodsSandbox bypass

Improper isolation or compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements for Implementations can create a malicious Groovy class running untrusted code on a separate Thread, thus bypassing the Groovy security sandbox. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 through 4.0.8, from 4.1.0-M0 through 4.1.3. Users are recommended to upgrade to version 4.0.9 / 4.1.4, which fix this issue.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-87779

Apache Syncope: AES Secret Key disclosure via log output

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.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-78336

Apache Syncope: OIDCC4UI provider list discloses client secrets to any authenticated user

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.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-77147

Apache Syncope: Groovy Sandbox escape for empty CommandArgs

Improper Control of Generation of Code ('Code Injection') vulnerability in Apache Syncope. An administrator with adequate entitlements for Implementations can create a malicious Groovy Command class containing untrusted code in their CommandArgs static implementation, bypassing the Groovy security sandbox. 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.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-73579

Apache Syncope: Non-recursive Any search could skip Realms restrictions

Incorrect Authorization vulnerability in Apache Syncope. Any search requests are transformed into SQL, Neo4J or Elasticsearch / Opensearch queries, depending on the actual deployment configuration. An important component of such transformation is the Realms filter, which ensures that the search results are matching the requester's permissions. For non-recursive search requests it is possible that such Realms filter is rendered as empty, thus voiding any restriction on requester privileges. 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.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-77051

Apache Syncope: SQL injection via unsanitized entityKey and opEvent in Audit Events search

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Apache Syncope. An administrator with adequate entitlements can achieve execution of arbitrary SQL via stacked queries, leveraging unsanitized entityKey and opEvent parameters. 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.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-73668

Apache Syncope: Cross-realm disclosure of confidential ConnId bundles configuration values

Incorrect Authorization vulnerability in Apache Syncope. An administrator with adequate entitlements in a given Realm may be able to read via REST the full Connector configuration, confidential properties included, scoped in another Realm and thus be able to effectively duplicate such Connector instance into the Realm they have administration rights for. 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.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-75015

Apache Syncope: Nested secrets leak cleartext into audit records readable

Insufficiently Protected Credentials vulnerability in Apache Syncope. Audit events, when sent to the configured store, are not sufficiently masked for the sensitive values they might carry on their payloads, thus allowing administrators to access such sensitive values. 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.

CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-73370

Apache Syncope: Cross-Realm boundaries reconciliation bypass

Incorrect Authorization vulnerability in Apache Syncope. Delegated administration security checks performed by Reconciliation service's pull and push, being incomplete, could accept calls by administrator not provided with adequate entitlements. 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.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-73178

Apache Syncope: JWT Access Token takeover

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Syncope. An administrator with adequate entitlements can get access via REST to the list of existing Access Tokens, including their signed JWT body. These values can be then used to perform further REST requests, impersonating users with higher administration entitlements. 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.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-73470

Apache Syncope: Delegating users can grant unowned Roles

Improper Privilege Management vulnerability in Apache Syncope. Delegations can be created or updated with Roles not owned by the delegating User, or not for the same Realm subtree under the delegation management was granted for. 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.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-87802

Apache Syncope: SRA OAuth2 JWT signature verification bypass

Improper verification of cryptographic signature vulnerability in Apache Syncope. When SRA is configured for OAuth 2.0 without JWKS set URI assigned, an attacker can forge arbitrary JWTs to impersonate any user identity and permissions, gaining full access to services proxied by SRA. 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.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-86460

Apache Syncope: Cypher Injection via FIQL Search on Neo4j Persistence

Cypher injection vulnerability in the Neo4j persistence layer when processing some FIQL search conditions. 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.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-82232

Apache Syncope: SQL injection via sort parameter in Task search

Improper neutralization of special elements used in an SQL command ('SQL injection') vulnerability in Apache Syncope. An administrator with adequate entitlements can achieve execution of arbitrary SQL via stacked queries, leveraging unsanitized sort clauses for Task search. 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.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope

CVE-2026-77181

Apache Syncope: ClientApp update entitlement not effective

Incorrect Authorization vulnerability in Apache Syncope. An administrator with ClientApp's update entitlement is unable to perform the related operation, while ClientApp's create entitlement is checked both for create and update operations on ClientApp. 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.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Syncope