{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-53910 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-53910 is a low-severity vulnerability in GNU diffutils, published on 22 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-53910 and fix it if it is affected.\n\nWhat it is: CVE-2026-53910 is a low-severity vulnerability in GNU diffutils, published on 22 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-53910 in the wild and no public exploit code.\n\nAffected product: GNU diffutils. 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-2026-53910/ (Markdown: https://insights.sbomify.com/CVE-2026-53910/index.md)","id":"CVE-2026-53910","markdown":"https://insights.sbomify.com/CVE-2026-53910/index.md","name":"CVE-2026-53910","record":{"aliases":["BELL-CVE-2026-53910","DEBIAN-CVE-2026-53910","ECHO-6cb2-c3d1-6736","GHSA-9pwr-gcwm-8wj5","MGASA-2026-0434","OESA-2026-3341","OESA-2026-3342","OESA-2026-3343","OESA-2026-3344","OESA-2026-3444","RHSA-2026:45327","UBUNTU-CVE-2026-53910","USN-8692-1"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"GNU diffutils","requires_auth":"none","summary":"Integer overflows in GNU diffutils diff3 allow attackers controlling diff output to trigger heap overflows, causing crashes or potential code execution.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERT-PL","cpe":[],"cvss":{"score":2.1,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L","version":"4.0"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds.\nWhen processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. \nAn attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.\n\nThis issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 \n\nNOTE:\nThe project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.","ecosystems":["Red Hat:hummingbird:1"],"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":"Heap-based Buffer Overflow in GNU diffutils","id":"CVE-2026-53910","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":1,"n_references":4,"next":{"headline":"Cerebrate primary key mass assignment in CRUD edit operations allows authenticated users to overwrite unrelated records","id":"CVE-2026-53911"},"packages":[{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.12-6.1.hum1"],"introduced":["0"],"last_affected":[],"package":"diffutils","purl":"pkg:rpm/redhat/diffutils","source":"RHSA-2026:45327"}],"prev":{"headline":"Arbitrary File Upload in MCO","id":"CVE-2026-53909"},"products":["diffutils"],"published":"2026-07-22","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-27","vendors":["GNU"]},"summary":"Integer overflows in GNU diffutils diff3 allow attackers controlling diff output to trigger heap overflows, causing crashes or potential code execution.","url":"https://insights.sbomify.com/CVE-2026-53910/"}