{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33645 exists.","fix":"No fix has been published for CVE-2026-33645 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-33645 is a high-severity path traversal vulnerability in ShaneIsrael fireshare, published on 26 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-33645 and fix it if it is affected.\n\nWhat it is: CVE-2026-33645 is a high-severity path traversal vulnerability in ShaneIsrael fireshare, published on 26 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33645 exists.\n\nAffected product: ShaneIsrael fireshare. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-33645/ (Markdown: https://insights.sbomify.com/CVE-2026-33645/index.md)","id":"CVE-2026-33645","markdown":"https://insights.sbomify.com/CVE-2026-33645/index.md","name":"CVE-2026-33645","record":{"aliases":["GHSA-7q8r-vpq3-89m7"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Fireshare media sharing","requires_auth":"low_privilege","summary":"An authenticated attacker can write arbitrary files outside the intended directory via path traversal in the chunked upload endpoint, compromising system integrity.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"fireshare","vendor":"shaneisrael"}],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","version":"3.1"},"cwes":[{"id":"CWE-73","name":"External Control of File Name or Path"},{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Fireshare facilitates self-hosted media and link sharing. In version 1.5.1, an authenticated path traversal vulnerability in Fireshare’s chunked upload endpoint allows an attacker to write arbitrary files outside the intended upload directory. The `checkSum` multipart field is used directly in filesystem path construction without sanitization or containment checks. This enables unauthorized file writes to attacker-chosen paths writable by the Fireshare process (e.g., container `/tmp`), violating integrity and potentially enabling follow-on attacks depending on deployment. Version 1.5.2 fixes the issue.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Fireshare has Path Traversal Arbitrary File Write in `/api/uploadChunked`","id":"CVE-2026-33645","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"mise: Arbitrary Code Execution via Tera Templates in .tool-versions Files (Trust Bypass)","id":"CVE-2026-33646"},"packages":[],"prev":{"headline":"Server-side request forgery in Lychee","id":"CVE-2026-33644"},"products":["fireshare"],"published":"2026-03-26","related":[{"cvss_score":9.8,"headline":"Fireshare Public Uploads feature is vulnerable to OS Command Injection (RCE)","id":"CVE-2025-67728","kev_date_added":null,"published":"2025-12-12"},{"cvss_score":9.1,"headline":"Unauthenticated Path Traversal Arbitrary File Write in /api/uploadChunked/public","id":"CVE-2026-34745","kev_date_added":null,"published":"2026-04-02"},{"cvss_score":6.5,"headline":"SQL injection in n/a","id":"CVE-2025-55476","kev_date_added":null,"published":"2025-09-02"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-03-27","vendors":["ShaneIsrael"]},"summary":"An authenticated attacker can write arbitrary files outside the intended directory via path traversal in the chunked upload endpoint, compromising system integrity.","url":"https://insights.sbomify.com/CVE-2026-33645/"}