{ "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-2026-100625", "tracking": { "current_release_date": "2026-09-30T17:41:04.161045Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-100625", "initial_release_date": "2026-09-26T14:26:26.131229Z", "revision_history": [ { "date": "2026-09-26T14:26:26.131229Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-09-26T14:26:30.656871Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-09-27T15:15:04.983659Z", "number": "3", "summary": "EPSS created.| Unknown change." }, { "date": "2026-09-27T15:15:15.105091Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-09-28T12:43:38.101410Z", "number": "5", "summary": "CVSS created.| CWES created (1).| References created (2).| Description created for source.| Unknown change." }, { "date": "2026-09-28T12:43:40.164058Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-09-29T16:13:15.538106Z", "number": "7", "summary": "EPSS created.| Unknown change." }, { "date": "2026-09-30T13:39:05.591682Z", "number": "8", "summary": "Unknown change." }, { "date": "2026-09-30T17:38:45.943007Z", "number": "9", "summary": "Products created (1)." }, { "date": "2026-09-30T17:38:55.920339Z", "number": "10", "summary": "NCSC Score updated." } ], "status": "interim", "version": "10" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<=*", "product": { "name": "vers:unknown/<=*", "product_id": "CSAFPID-9493171" } } ], "category": "product_name", "name": "capgo.app" } ], "category": "vendor", "name": "Cap-go" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-100625", "cwe": { "id": "CWE-441", "name": "Unintended Proxy or Intermediary ('Confused Deputy')" }, "notes": [ { "category": "description", "text": "Capgo (capgo.app) exposes a native build TUS upload proxy (supabase/functions/_backend/public/build/upload.ts) that authorizes a caller against a single build job identified by the supplied builder_job_id and validates only that job's stored upload_path, but then forwards the user-controlled TUS resource suffix taken from /build/upload/:jobId/* to the builder service while injecting Capgo's privileged builder API key. Because the forwarded suffix is never bound to the authorized job's upload_path or upload_session_key, a caller holding a valid 'all' or 'write' Capgo API key with app.build_native permission for one application can use its authorized proxy path for job A to write to the TUS upload resource of another job B, provided that resource suffix is known or exposed, corrupting that build's artifacts. All versions are affected; no patch was available at the time of advisory publication.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-100625" }, { "category": "description", "text": "Capgo (capgo.app) exposes a native build TUS upload proxy (supabase/functions/_backend/public/build/upload.ts) that authorizes a caller against a single build job identified by the supplied builder_job_id and validates only that job's stored upload_path, but then forwards the user-controlled TUS resource suffix taken from /build/upload/:jobId/* to the builder service while injecting Capgo's privileged builder API key. Because the forwarded suffix is never bound to the authorized job's upload_path or upload_session_key, a caller holding a valid 'all' or 'write' Capgo API key with app.build_native permission for one application can use its authorized proxy path for job A to write to the TUS upload resource of another job B, provided that resource suffix is known or exposed, corrupting that build's artifacts. All versions are affected; no patch was available at the time of advisory publication.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-100625" }, { "category": "other", "text": "0.00252", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "title": "CVSSV4" }, { "category": "other", "text": "8.7", "title": "CVSSV4 base score" }, { "category": "other", "text": "4.0", "title": "NCSC Score" }, { "category": "other", "text": "There is cwe data available from source Nvd, The value of the most recent CVSS (V3) score", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-9493171" ] }, "references": [ { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100625" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-100625" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-100625" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://github.com/Cap-go/capgo.app/security/advisories/GHSA-r45q-x4gr-3mvv" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://www.vulncheck.com/advisories/capgo-build-upload-proxy-authorization-bypass-via-tus-resource" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L", "baseScore": 7.1, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-9493171" ] } ], "title": "CVE-2026-100625" } ] }