{"answers":{"affected":"2 open source packages ship an affected version, including builder-util-runtime. It affects 2 products.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54673 exists.","fix":"Upgrade builder-util-runtime to 9.7.0 or later.","what":"CVE-2026-54673 is a high-severity vulnerability in electron-userland builder-util-runtime, published on 30 Jun 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-54673 and fix it if it is affected.\n\nWhat it is: CVE-2026-54673 is a high-severity vulnerability in electron-userland builder-util-runtime, published on 30 Jun 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54673 exists.\n\nAffected packages and fixed versions:\n- builder-util-runtime (npm): affected all versions; fixed in 9.7.0\n- builder-util-runtime (npm): affected all versions; fixed in 9.7.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-54673/ (Markdown: https://insights.sbomify.com/CVE-2026-54673/index.md)","id":"CVE-2026-54673","markdown":"https://insights.sbomify.com/CVE-2026-54673/index.md","name":"CVE-2026-54673","record":{"aliases":["GHSA-p2f4-r6v6-j797"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Electron updater library","requires_auth":"low_privilege","summary":"An attacker can steal GitLab PRIVATE-TOKEN and mixed-case Authorization credentials via cross-origin redirects in the Electron updater library.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"builder-util-runtime","vendor":"electron"},{"product":"electron-builder","vendor":"electron"}],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"electron-updater allows for automatic updates for Electron apps. Prior to 9.7.0, the HTTP redirect handler (HttpExecutor.prepareRedirectUrlOptions) only stripped a credential header whose key string matched exactly lowercase \"authorization\", exposing credentials. Other credential-bearing headers — most notably PRIVATE-TOKEN (used by GitLab's personal access token flow) and mixed-case Authorization (used by GitLab's Bearer/OAuth flow) — were not stripped and could be forwarded to an attacker-controlled cross-origin redirect destination. This issue has been fixed in version 9.7.0.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"electron-updater: Cross-origin redirect leaks `PRIVATE-TOKEN` and mixed-case `Authorization` credentials in `builder-util-runtime`","id":"CVE-2026-54673","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"Authenticated Command Injection in FreePBX UCP Interface","id":"CVE-2026-54674"},"packages":[{"ecosystem":"npm","fixed":["9.7.0"],"introduced":["0"],"last_affected":[],"package":"builder-util-runtime","purl":null,"source":"GHSA-p2f4-r6v6-j797"},{"ecosystem":"npm","fixed":["9.7.0"],"introduced":["0"],"last_affected":[],"package":"builder-util-runtime","purl":"pkg:npm/builder-util-runtime","source":"GHSA-p2f4-r6v6-j797"}],"prev":{"headline":"electron-updater: Uncontrolled search path elements within `AppImage` built by `app-builder-lib`","id":"CVE-2026-54672"},"products":["builder-util-runtime","electron-builder"],"published":"2026-06-30","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-01","vendors":["electron-userland"]},"summary":"An attacker can steal GitLab PRIVATE-TOKEN and mixed-case Authorization credentials via cross-origin redirects in the Electron updater library.","url":"https://insights.sbomify.com/CVE-2026-54673/"}