{"answers":{"affected":"2 open source packages ship an affected version, including protocol-buffers-schema.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5758 exists.","fix":"Upgrade protocol-buffers-schema to 3.6.1 or later.","what":"CVE-2026-5758 is a medium-severity vulnerability in Mafintosh Protocol-buffers-schema parser, published on 15 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-5758 and fix it if it is affected.\n\nWhat it is: CVE-2026-5758 is a medium-severity vulnerability in Mafintosh Protocol-buffers-schema parser, published on 15 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5758 exists.\n\nAffected packages and fixed versions:\n- protocol-buffers-schema (npm): affected all versions; fixed in 3.6.1\n- protocol-buffers-schema (npm): affected all versions; fixed in 3.6.1\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-2026-5758/ (Markdown: https://insights.sbomify.com/CVE-2026-5758/index.md)","id":"CVE-2026-5758","markdown":"https://insights.sbomify.com/CVE-2026-5758/index.md","name":"CVE-2026-5758","record":{"aliases":["GHSA-j452-xhg8-qg39","MINI-3782-v826-8fv2","MINI-652x-h5j6-qqxh","MINI-6wwc-9mgc-pj3c","MINI-f9wq-73xm-76g6"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript protocol buffers parser","requires_auth":"none","summary":"An attacker can exploit prototype pollution in the protocol-buffers-schema library to execute code, cause denial of service, or bypass security checks.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"certcc","cpe":[],"cvss":{"score":6.5,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","version":"3.1"},"cwes":[],"description":"JavaScript is vulnerable to prototype pollution in Mafintosh's protocol-buffers-schema Version 3.6.0, where an attacker may alter the application logic, bypass security checks, cause a DoS or achieve remote code execution.","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":"Mafintosh's protocol-buffers-schema is vulnerable to prototype pollution","id":"CVE-2026-5758","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"other","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"Double free and use-after-free in FalkorDB RdbLoadDeletedNodes allows remote code execution via crafted RDB","id":"CVE-2026-5759"},"packages":[{"ecosystem":"npm","fixed":["3.6.1"],"introduced":["0"],"last_affected":[],"package":"protocol-buffers-schema","purl":null,"source":"GHSA-j452-xhg8-qg39"},{"ecosystem":"npm","fixed":["3.6.1"],"introduced":["0"],"last_affected":[],"package":"protocol-buffers-schema","purl":"pkg:npm/protocol-buffers-schema","source":"GHSA-j452-xhg8-qg39"}],"prev":{"headline":"There exists an unauthenticated remote information disclosure vulnerability in Ollama's model quantization engine","id":"CVE-2026-5757"},"products":["Protocol-buffers-schema parser"],"published":"2026-04-15","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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-15","vendors":["Mafintosh"]},"summary":"An attacker can exploit prototype pollution in the protocol-buffers-schema library to execute code, cause denial of service, or bypass security checks.","url":"https://insights.sbomify.com/CVE-2026-5758/"}