{"answers":{"affected":"3 open source packages ship an affected version, including wireshark-mcp. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-43901 exists.","fix":"No fix has been published for CVE-2026-43901 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-43901 is a medium-severity path traversal vulnerability in bx33661 Wireshark-MCP, published on 11 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-43901 and fix it if it is affected.\n\nWhat it is: CVE-2026-43901 is a medium-severity path traversal vulnerability in bx33661 Wireshark-MCP, published on 11 May 2026. An attacker can exploit it over the internet without logging in, 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-2026-43901 exists.\n\nAffected packages and fixed versions:\n- wireshark-mcp (PyPI): affected all versions up to 1.1.5; no fix listed\n- wireshark-mcp (PyPI): affected all versions up to 1.1.5; no fix listed\n- wireshark-mcp (PyPI): affected all versions up to 1.1.5; no fix listed\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-2026-43901/ (Markdown: https://insights.sbomify.com/CVE-2026-43901/index.md)","id":"CVE-2026-43901","markdown":"https://insights.sbomify.com/CVE-2026-43901/index.md","name":"CVE-2026-43901","record":{"aliases":["GHSA-3r68-x3xc-rxpg","PYSEC-2026-3426","UBUNTU-CVE-2026-43901"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Wireshark MCP server","requires_auth":"none","summary":"Attackers can write arbitrary files to the filesystem via the export_objects tool in default installations of Wireshark MCP.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"wireshark_mcp","vendor":"bx33661"}],"cvss":{"score":6.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Wireshark MCP is an MCP Server that turns tshark into a structured analysis interface, then layers in optional Wireshark suite utilities. In 1.1.5 and earlier, wireshark-mcp exposes a wireshark_export_objects MCP tool that accepts an attacker-controlled dest_dir parameter and passes it to tshark's --export-objects flag with no mandatory path restriction. The path sandbox (_allowed_dirs) is None by default and only activates when the environment variable WIRESHARK_MCP_ALLOWED_DIRS is explicitly set. In a default installation, any directory on the filesystem can be used as the export destination.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Wireshark MCP: Arbitrary file write via export_objects when WIRESHARK_MCP_ALLOWED_DIRS is not configured","id":"CVE-2026-43901","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":3,"n_references":1,"next":{"headline":"OpenImageIO: SGI RLE decoder heap buffer overflow OIIO_DASSERT bounds checks are no-ops in release builds","id":"CVE-2026-43903"},"packages":[{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["1.1.5"],"package":"wireshark-mcp","purl":null,"source":"GHSA-3r68-x3xc-rxpg"},{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["1.1.5"],"package":"wireshark-mcp","purl":"pkg:pypi/wireshark-mcp","source":"GHSA-3r68-x3xc-rxpg"},{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["1.1.5"],"package":"wireshark-mcp","purl":"pkg:pypi/wireshark-mcp","source":"PYSEC-2026-3426"}],"prev":{"headline":"DeepChat: Persistent DOM XSS via HTML Entity Encoding in `\u003cantArtifact\u003e` SVG Rendering (Bypass of `svgSanitizer.ts`)","id":"CVE-2026-43900"},"products":["Wireshark-MCP"],"published":"2026-05-11","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":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"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":"total"},"state":"PUBLISHED","updated":"2026-05-13","vendors":["bx33661"]},"summary":"Attackers can write arbitrary files to the filesystem via the export_objects tool in default installations of Wireshark MCP.","url":"https://insights.sbomify.com/CVE-2026-43901/"}