{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-26956 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-26956 is a critical memory corruption vulnerability in n/a, published on 9 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-26956 and fix it if it is affected.\n\nWhat it is: CVE-2021-26956 is a critical memory corruption vulnerability in n/a, published on 9 Feb 2021. 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-2021-26956 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2021-26956/ (Markdown: https://insights.sbomify.com/CVE-2021-26956/index.md)","id":"CVE-2021-26956","markdown":"https://insights.sbomify.com/CVE-2021-26956/index.md","name":"CVE-2021-26956","record":{"aliases":["DEBIAN-CVE-2021-26956","UBUNTU-CVE-2021-26956"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","other"],"network_reachable":"yes","non_default_config":false,"product_category":"Rust xcb crate","requires_auth":"none","summary":"A soundness violation in the Rust xcb crate allows X server bytes to be misinterpreted, potentially leading to memory corruption or code execution.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"xcb","vendor":"xcb_project"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"An issue was discovered in the xcb crate through 2021-02-04 for Rust. It has a soundness violation because bytes from an X server can be interpreted as any data type returned by xcb::xproto::GetPropertyReply::value.","ecosystems":[],"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":"Memory corruption in n/a","id":"CVE-2021-26956","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Memory corruption in n/a","id":"CVE-2021-26957"},"packages":[],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2021-26955"},"products":["n/a"],"published":"2021-02-09","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2021-26955","kev_date_added":null,"published":"2021-02-09"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2021-26957","kev_date_added":null,"published":"2021-02-09"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2021-26958","kev_date_added":null,"published":"2021-02-09"},{"cvss_score":5.5,"headline":"Memory handling issues in xcb","id":"CVE-2020-36205","kev_date_added":null,"published":"2021-01-22"}],"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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"A soundness violation in the Rust xcb crate allows X server bytes to be misinterpreted, potentially leading to memory corruption or code execution.","url":"https://insights.sbomify.com/CVE-2021-26956/"}