{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-30870", "tracking": { "current_release_date": "2026-03-24T10:00:35.222940Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-30870", "initial_release_date": "2026-03-09T17:02:43.705733Z", "revision_history": [ { "date": "2026-03-09T17:02:43.705733Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-09T17:02:45.666526Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-09T18:21:01.544943Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (2).| References created (1).| CWES updated (1)." }, { "date": "2026-03-09T18:21:14.722933Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-09T22:38:40.834474Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (3).| References created (1).| CWES updated (1)." }, { "date": "2026-03-09T22:38:46.598814Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-10T07:34:33.939496Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-10T14:21:04.143941Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-10T14:38:44.734755Z", "number": "9", "summary": "Unknown change." }, { "date": "2026-03-10T18:30:14.778253Z", "number": "10", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-03-10T18:30:26.809083Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-03-10T19:58:32.827122Z", "number": "12", "summary": "References created (1)." }, { "date": "2026-03-11T23:49:58.041659Z", "number": "13", "summary": "References created (1)." }, { "date": "2026-03-11T23:50:00.356495Z", "number": "14", "summary": "NCSC Score updated." }, { "date": "2026-03-19T15:29:08.070168Z", "number": "15", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-19T15:29:10.466313Z", "number": "16", "summary": "NCSC Score updated." }, { "date": "2026-03-20T09:33:46.745383Z", "number": "17", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-24T10:00:25.426058Z", "number": "18", "summary": "Description removed for source.| Description created for source.| Products created (4).| Product Identifiers created (2).| Products removed (2)." }, { "date": "2026-03-24T10:00:33.288257Z", "number": "19", "summary": "NCSC Score updated." } ], "status": "interim", "version": "19" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/1.20.0", "product": { "name": "vers:unknown/1.20.0", "product_id": "CSAFPID-5897397", "product_identification_helper": { "purl": "pkg:npm/%40powersync/service-core@1.20.0" } } }, { "category": "product_version_range", "name": "vers:unknown/>=1.20.0|<1.20.1", "product": { "name": "vers:unknown/>=1.20.0|<1.20.1", "product_id": "CSAFPID-5897398" } } ], "category": "product_name", "name": "@powersync/service-core" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/0.32.0", "product": { "name": "vers:unknown/0.32.0", "product_id": "CSAFPID-5897399", "product_identification_helper": { "purl": "pkg:npm/%40powersync/service-sync-rules@0.32.0" } } }, { "category": "product_version_range", "name": "vers:unknown/>=0.32.0|<0.33.0", "product": { "name": "vers:unknown/>=0.32.0|<0.33.0", "product_id": "CSAFPID-5897400" } } ], "category": "product_name", "name": "@powersync/service-sync-rules" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<1.20.1", "product": { "name": "vers:unknown/<1.20.1", "product_id": "CSAFPID-5772705" } } ], "category": "product_name", "name": "powersync-service" } ], "category": "vendor", "name": "powersync-ja" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<1.20.1", "product": { "name": "vers:unknown/<1.20.1", "product_id": "CSAFPID-5772706" } } ], "category": "product_name", "name": "service-core" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<0.33.0", "product": { "name": "vers:unknown/<0.33.0", "product_id": "CSAFPID-5772707" } } ], "category": "product_name", "name": "service-sync-rules" } ], "category": "vendor", "name": "@powersync" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-30870", "notes": [ { "category": "description", "text": "### Impact\n\nIn version **1.20.0**, when using new sync streams with `config.edition: 3`, certain subquery filters were ignored when determining which data to sync to users.\n\nDepending on the sync stream configuration, this could result in authenticated users syncing data that should have been restricted.\n\nOnly queries that gate synchronization using subqueries without partitioning the result set are affected.\n\nNot affected:\n * Sync rules (bucket_definitions)\n * Sync streams using `config.edition: 2`\n * No data is exposed without authenticating\n\n### Patches\n\nThe issue is **fixed in 1.20.1**. Restarting the service with the new version is sufficient - no reprocessing of sync streams is required.\n\nAny data that users erroneously synced will be automatically removed from those devices when they connect again.\n\nPowerSync has updated all affected PowerSync Cloud instances to the fixed version, and is reaching out to affected customers.\n\nFor self-hosted PowerSync instances, update to the latest version and restart.\n\n### Affected queries\n\nSubqueries used only to determine whether or not a table should be synced (without partitioning the data itself) are affected. Examples:\n\n```sql\n-- Goal: Sync a table only to admin users\n-- 1.20.0: all authenticated users would sync this table\nSELECT * FROM sensitive_table WHERE auth.user_id() IN (SELECT user_id FROM admins)\nSELECT * FROM sensitive_table WHERE 1 IN (SELECT 1 FROM users WHERE id = auth.user_id() AND is_admin = TRUE)\n\n-- Goal: Sync a table only if authorized\n-- 1.20.0: all authenticated users would sync this table\nSELECT * FROM sensitive_table WHERE 'sensitive_table' IN (SELECT table_name FROM synced_table WHERE \"user\" = auth.user_id())\nSELECT * FROM sensitive_table WHERE 'sensitive_table' IN auth.parameter('allowed_tables')\n```\n\nQueries that partition data (for example `SELECT * FROM sensitive_table WHERE owner IN (SELECT id FROM users WHERE is_admin AND id = auth.user_id())`) are not affected by this issue.", "title": "github - https://github.com/advisories/GHSA-q6wc-xx4m-92fj" }, { "category": "description", "text": "PowerSync Service is the server-side component of the PowerSync sync engine. In version 1.20.0, when using new sync streams with config.edition: 3, certain subquery filters were ignored when determining which data to sync to users. Depending on the sync stream configuration, this could result in authenticated users syncing data that should have been restricted. Only queries that gate synchronization using subqueries without partitioning the result set are affected. This vulnerability is fixed in 1.20.1.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-30870" }, { "category": "description", "text": "PowerSync Service is the server-side component of the PowerSync sync engine. In version 1.20.0, when using new sync streams with config.edition: 3, certain subquery filters were ignored when determining which data to sync to users. Depending on the sync stream configuration, this could result in authenticated users syncing data that should have been restricted. Only queries that gate synchronization using subqueries without partitioning the result set are affected. This vulnerability is fixed in 1.20.1.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-30870" }, { "category": "description", "text": "### Impact\n\nIn version **1.20.0**, when using new sync streams with `config.edition: 3`, certain subquery filters were ignored when determining which data to sync to users.\n\nDepending on the sync stream configuration, this could result in authenticated users syncing data that should have been restricted.\n\nOnly queries that gate synchronization using subqueries without partitioning the result set are affected.\n\nNot affected:\n * Sync rules (bucket_definitions)\n * Sync streams using `config.edition: 2`\n * No data is exposed without authenticating\n\n### Patches\n\nThe issue is **fixed in 1.20.1**. Restarting the service with the new version is sufficient - no reprocessing of sync streams is required.\n\nAny data that users erroneously synced will be automatically removed from those devices when they connect again.\n\nPowerSync has updated all affected PowerSync Cloud instances to the fixed version, and is reaching out to affected customers.\n\nFor self-hosted PowerSync instances, update to the latest version and restart.\n\n### Affected queries\n\nSubqueries used only to determine whether or not a table should be synced (without partitioning the data itself) are affected. Examples:\n\n```sql\n-- Goal: Sync a table only to admin users\n-- 1.20.0: all authenticated users would sync this table\nSELECT * FROM sensitive_table WHERE auth.user_id() IN (SELECT user_id FROM admins)\nSELECT * FROM sensitive_table WHERE 1 IN (SELECT 1 FROM users WHERE id = auth.user_id() AND is_admin = TRUE)\n\n-- Goal: Sync a table only if authorized\n-- 1.20.0: all authenticated users would sync this table\nSELECT * FROM sensitive_table WHERE 'sensitive_table' IN (SELECT table_name FROM synced_table WHERE \"user\" = auth.user_id())\nSELECT * FROM sensitive_table WHERE 'sensitive_table' IN auth.parameter('allowed_tables')\n```\n\nQueries that partition data (for example `SELECT * FROM sensitive_table WHERE owner IN (SELECT id FROM users WHERE is_admin AND id = auth.user_id())`) are not affected by this issue.", "title": "github - https://api.github.com/advisories/GHSA-q6wc-xx4m-92fj" }, { "category": "description", "text": "### Impact\n\nIn version **1.20.0**, when using new sync streams with `config.edition: 3`, certain subquery filters were ignored when determining which data to sync to users.\n\nDepending on the sync stream configuration, this could result in authenticated users syncing data that should have been restricted.\n\nOnly queries that gate synchronization using subqueries without partitioning the result set are affected.\n\nNot affected:\n * Sync rules (bucket_definitions)\n * Sync streams using `config.edition: 2`\n * No data is exposed without authenticating\n\n### Patches\n\nThe issue is **fixed in 1.20.1**. Restarting the service with the new version is sufficient - no reprocessing of sync streams is required.\n\nAny data that users erroneously synced will be automatically removed from those devices when they connect again.\n\nWe have updated all affected PowerSync Cloud instances to the fixed version, and are reaching out to affected customers.\n\nFor self-hosted PowerSync instances, update to the latest version and restart.\n\n### Affected queries\n\nSubqueries used only to determine whether or not a table should be synced (without partitioning the data itself) are affected. Examples:\n\n```sql\n-- Goal: Sync a table only to admin users\n-- 1.20.0: all authenticated users would sync this table\nSELECT * FROM sensitive_table WHERE auth.user_id() IN (SELECT user_id FROM admins)\nSELECT * FROM sensitive_table WHERE 1 IN (SELECT 1 FROM users WHERE id = auth.user_id() AND is_admin = TRUE)\n\n-- Goal: Sync a table only if authorized\n-- 1.20.0: all authenticated users would sync this table\nSELECT * FROM sensitive_table WHERE 'sensitive_table' IN (SELECT table_name FROM synced_table WHERE \"user\" = auth.user_id())\nSELECT * FROM sensitive_table WHERE 'sensitive_table' IN auth.parameter('allowed_tables')\n```\n\nQueries that partition data (for example `SELECT * FROM sensitive_table WHERE owner IN (SELECT id FROM users WHERE is_admin AND id = auth.user_id())`) are not affected by this issue.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-q6wc-xx4m-92fj.json?alt=media" }, { "category": "other", "text": "0.00032", "title": "EPSS" }, { "category": "other", "text": "3.8", "title": "NCSC Score" }, { "category": "other", "text": "There is cwe data available from source Nvd, The value of the most recent EPSS score", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5772705", "CSAFPID-5772706", "CSAFPID-5772707", "CSAFPID-5897397", "CSAFPID-5897398", "CSAFPID-5897399", "CSAFPID-5897400" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://github.com/advisories/GHSA-q6wc-xx4m-92fj" }, { "category": "external", "summary": "Source raw - github", "url": "https://api.github.com/advisories/GHSA-q6wc-xx4m-92fj" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-q6wc-xx4m-92fj.json?alt=media" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-30870" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/30xxx/CVE-2026-30870.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-30870" }, { "category": "external", "summary": "Source raw - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30870" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-30870" }, { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-q6wc-xx4m-92fj" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/powersync-ja/powersync-service/security/advisories/GHSA-q6wc-xx4m-92fj" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-q6wc-xx4m-92fj" }, { "category": "external", "summary": "Reference - github; osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30870" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-5772705", "CSAFPID-5772706", "CSAFPID-5772707", "CSAFPID-5897397", "CSAFPID-5897398", "CSAFPID-5897399", "CSAFPID-5897400" ] } ], "title": "CVE-2026-30870" } ] }