{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-62239 exists.","fix":"No fix has been published for CVE-2026-62239 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-62239 is a medium-severity path traversal vulnerability in Dao-AILab flash-attention, published on 13 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-62239 and fix it if it is affected.\n\nWhat it is: CVE-2026-62239 is a medium-severity path traversal vulnerability in Dao-AILab flash-attention, published on 13 Jul 2026. It can only be exploited from the same machine or local 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-2026-62239 exists.\n\nAffected product: Dao-AILab flash-attention. 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-2026-62239/ (Markdown: https://insights.sbomify.com/CVE-2026-62239/index.md)","id":"CVE-2026-62239","markdown":"https://insights.sbomify.com/CVE-2026-62239/index.md","name":"CVE-2026-62239","record":{"aliases":["GHSA-w9r7-4gwr-j959"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"FlashAttention library","requires_auth":"low_privilege","summary":"A local attacker can exploit symlink handling in FlashAttention's build script to write arbitrary files, potentially leading to code execution or privilege escalation.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-59","name":"Improper Link Resolution Before File Access"}],"description":"FlashAttention through 2.8.3.post1, fixed in commit 0816ef1, contains a symlink attack vulnerability in the download_and_copy() function within hopper/setup.py that extracts NVIDIA toolchain archives without validating symlinks or filtering tar members. A local attacker can pre-plant a symlink in the predictable cache directory to redirect extracted binaries to an attacker-chosen location, enabling arbitrary file write with victim privileges during build time.","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":"FlashAttention Symlink Attack via tarfile.extractall in hopper/setup.py","id":"CVE-2026-62239","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"CrewAI \u003c 1.15.1 SSRF Filter Bypass via HTTP Redirect in Scrape Tools","id":"CVE-2026-62240"},"packages":[],"prev":{"headline":"OpenRemote \u003c 1.26.0 SQL Injection via Crosstab Export","id":"CVE-2026-62238"},"products":["flash-attention"],"published":"2026-07-13","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-09-17","vendors":["Dao-AILab"]},"summary":"A local attacker can exploit symlink handling in FlashAttention's build script to write arbitrary files, potentially leading to code execution or privilege escalation.","url":"https://insights.sbomify.com/CVE-2026-62239/"}