{"answers":{"affected":"6 open source packages ship an affected version, including protobufjs and @protobufjs/utf8. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-44288 in the wild and no public exploit code.","fix":"Upgrade protobufjs to a fixed version for your release line: 7.5.6 or 8.0.2.","what":"CVE-2026-44288 is a medium-severity vulnerability in protobufjs protobuf.js, published on 13 May 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-2026-44288 and fix it if it is affected.\n\nWhat it is: CVE-2026-44288 is a medium-severity vulnerability in protobufjs protobuf.js, published on 13 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-44288 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- protobufjs (npm): affected all versions; fixed in 7.5.6\n- protobufjs (npm): affected all versions; fixed in 7.5.6\n- protobufjs (npm): affected from 8.0.0; fixed in 8.0.2\n- protobufjs (npm): affected from 8.0.0; fixed in 8.0.2\n- @protobufjs/utf8 (npm): affected all versions; fixed in 1.1.1\n- @protobufjs/utf8 (npm): affected all versions; fixed in 1.1.1\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-2026-44288/ (Markdown: https://insights.sbomify.com/CVE-2026-44288/index.md)","id":"CVE-2026-44288","markdown":"https://insights.sbomify.com/CVE-2026-44288/index.md","name":"CVE-2026-44288","record":{"aliases":["CLEANSTART-2026-GG71544","CLEANSTART-2026-QH47034","CLSA-2026-1778805971","CLSA-2026-1780966319","CLSA-2026-1792161466","CLSA-2026-1792510240","ECHO-72a3-0efc-e50d","GHSA-q6x5-8v7m-xcrf","MINI-28mh-hxc7-j457","MINI-4g4q-v3fc-xwrm","MINI-5chx-x6v3-jx83","MINI-5x56-wrv7-h4mm","MINI-69gg-v7w5-385x","MINI-6xfh-3842-c55m","MINI-83j3-qq7c-9cgh","MINI-8mxr-hj4r-cqxh","MINI-g845-rx2c-7w58","MINI-jw2v-jccr-49ph","MINI-mf86-rmjj-96mj","MINI-mxqh-ww2v-9m3c","MINI-pxxm-p5jp-p6h3","MINI-rr78-5wwh-mvjf","MINI-v2qc-qrpq-hvcp","MINI-xww7-5rrv-43w5","ROOT-APP-NPM-CVE-2026-44288"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript protobuf library","requires_auth":"none","summary":"Attackers can bypass application-level byte checks by using overlong UTF-8 sequences in protobuf data, potentially evading security filters.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"protobufjs","vendor":"protobufjs_project"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-176","name":"Improper Handling of Unicode Encoding"}],"description":"protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs includes a minimal UTF-8 decoder that accepted overlong UTF-8 byte sequences and decoded them to their canonical characters instead of replacing them. An attacker who can provide protobuf binary data decoded through the affected UTF-8 path may be able to bypass application-level checks that inspect raw bytes before protobuf string decoding. For example, bytes that do not contain certain ASCII characters could decode to strings containing those characters. This vulnerability is fixed in 7.5.6 and 8.0.2.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"protobufjs: Overlong UTF-8 decoding","id":"CVE-2026-44288","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"other","year":"2026"},"n_packages":6,"n_references":1,"next":{"headline":"protobufjs: Denial of service through unbounded protobuf recursion","id":"CVE-2026-44289"},"packages":[{"ecosystem":"npm","fixed":["1.1.1"],"introduced":["0"],"last_affected":[],"package":"@protobufjs/utf8","purl":null,"source":"GHSA-q6x5-8v7m-xcrf"},{"ecosystem":"npm","fixed":["1.1.1"],"introduced":["0"],"last_affected":[],"package":"@protobufjs/utf8","purl":"pkg:npm/%40protobufjs/utf8","source":"GHSA-q6x5-8v7m-xcrf"},{"ecosystem":"npm","fixed":["7.5.6"],"introduced":["0"],"last_affected":[],"package":"protobufjs","purl":null,"source":"GHSA-q6x5-8v7m-xcrf"},{"ecosystem":"npm","fixed":["7.5.6"],"introduced":["0"],"last_affected":[],"package":"protobufjs","purl":"pkg:npm/protobufjs","source":"GHSA-q6x5-8v7m-xcrf"},{"ecosystem":"npm","fixed":["8.0.2"],"introduced":["8.0.0"],"last_affected":[],"package":"protobufjs","purl":null,"source":"GHSA-q6x5-8v7m-xcrf"},{"ecosystem":"npm","fixed":["8.0.2"],"introduced":["8.0.0"],"last_affected":[],"package":"protobufjs","purl":"pkg:npm/protobufjs","source":"GHSA-q6x5-8v7m-xcrf"}],"prev":{"headline":"FastGPT: sandbox escape to RCE - code-sandbox regex /\\bimport\\s*\\(/ is bypassable","id":"CVE-2026-44287"},"products":["protobuf.js"],"published":"2026-05-13","related":[{"cvss_score":9.8,"headline":"protobufjs Prototype Pollution vulnerability","id":"CVE-2023-36665","kev_date_added":null,"published":"2023-07-05"},{"cvss_score":9.4,"headline":"protobufjs has an arbitrary code execution issue","id":"CVE-2026-41242","kev_date_added":null,"published":"2026-04-18"},{"cvss_score":8.2,"headline":"Prototype Pollution","id":"CVE-2022-25878","kev_date_added":null,"published":"2022-05-27"},{"cvss_score":8.1,"headline":"protobufjs: Code generation gadget after prototype pollution","id":"CVE-2026-44291","kev_date_added":null,"published":"2026-05-13"},{"cvss_score":7.7,"headline":"protobufjs: Code injection through bytes field defaults in generated toObject code","id":"CVE-2026-44293","kev_date_added":null,"published":"2026-05-13"},{"cvss_score":7.5,"headline":"protobufjs: Denial of service through unbounded Any expansion during JSON conversion","id":"CVE-2026-48712","kev_date_added":null,"published":"2026-06-22"},{"cvss_score":7.5,"headline":"protobufjs: Denial of service through unbounded protobuf recursion","id":"CVE-2026-44289","kev_date_added":null,"published":"2026-05-13"}],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-13","vendors":["protobufjs"]},"summary":"Attackers can bypass application-level byte checks by using overlong UTF-8 sequences in protobuf data, potentially evading security filters.","url":"https://insights.sbomify.com/CVE-2026-44288/"}