{"answers":{"affected":"4 open source packages ship an affected version, including github.com/elastic/beats/v7 and github.com/elastic/beats. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-26933 in the wild and no public exploit code.","fix":"Upgrade github.com/elastic/beats/v7 to 7.0.0-alpha2.0.20260126223743-dec1b31111ec or later.","what":"CVE-2026-26933 is a medium-severity denial of service vulnerability in Elastic Packetbeat, published on 19 Mar 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-2026-26933 and fix it if it is affected.\n\nWhat it is: CVE-2026-26933 is a medium-severity denial of service vulnerability in Elastic Packetbeat, published on 19 Mar 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-2026-26933 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/elastic/beats/v7 (Go): affected all versions; fixed in 7.0.0-alpha2.0.20260126223743-dec1b31111ec\n- github.com/elastic/beats/v7 (Go): affected all versions; fixed in 7.0.0-alpha2.0.20260126223743-dec1b31111ec\n- github.com/elastic/beats/v7 (Go): affected all versions; fixed in 7.0.0-alpha2.0.20260126223743-dec1b31111ec\n- github.com/elastic/beats (Go): affected all versions; 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-2026-26933/ (Markdown: https://insights.sbomify.com/CVE-2026-26933/index.md)","id":"CVE-2026-26933","markdown":"https://insights.sbomify.com/CVE-2026-26933/index.md","name":"CVE-2026-26933","record":{"aliases":["ECHO-2325-2fc0-293f","GHSA-27qj-9gvp-8rh9","GO-2026-4789","MINI-436j-j77x-w2j5","MINI-5m6m-f2j5-vf7p","MINI-97gv-cprr-p257","MINI-9hjx-pvqx-5q45","MINI-cjf2-rjpg-gqrr","MINI-fvmp-5xpr-r2pf","MINI-mjmx-3qmw-vpx7","MINI-vrvc-jhwh-m52m","MINI-wmcc-28j5-f67x","MINI-wrqx-9hw4-8j38"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Packetbeat network monitor","requires_auth":"low_privilege","summary":"An attacker on the same network segment can crash Packetbeat by sending malformed network packets that trigger out-of-bounds reads in protocol parsers.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"elastic","cpe":[{"product":"packetbeat","vendor":"elasticsearch"}],"cvss":{"score":5.7,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-129","name":"Improper Validation of Array Index"}],"description":"Improper Validation of Array Index (CWE-129) in multiple protocol parser components in Packetbeat can lead Denial of Service via Input Data Manipulation (CAPEC-153). An attacker with the ability to send specially crafted, malformed network packets to a monitored network interface can trigger out-of-bounds read operations, resulting in application crashes or resource exhaustion. This requires the attacker to be positioned on the same network segment as the Packetbeat deployment or to control traffic routed to monitored interfaces.","ecosystems":["Go"],"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":"Improper Validation of Array Index in Packetbeat Leading to Denial of Service","id":"CVE-2026-26933","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":4,"n_references":1,"next":{"headline":"Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service","id":"CVE-2026-26934"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/elastic/beats","purl":"pkg:golang/github.com/elastic/beats","source":"GO-2026-4789"},{"ecosystem":"Go","fixed":["7.0.0-alpha2.0.20260126223743-dec1b31111ec"],"introduced":["0"],"last_affected":[],"package":"github.com/elastic/beats/v7","purl":null,"source":"GHSA-27qj-9gvp-8rh9"},{"ecosystem":"Go","fixed":["7.0.0-alpha2.0.20260126223743-dec1b31111ec"],"introduced":["0"],"last_affected":[],"package":"github.com/elastic/beats/v7","purl":"pkg:golang/github.com/elastic/beats/v7","source":"GHSA-27qj-9gvp-8rh9"},{"ecosystem":"Go","fixed":["7.0.0-alpha2.0.20260126223743-dec1b31111ec"],"introduced":["0"],"last_affected":[],"package":"github.com/elastic/beats/v7","purl":"pkg:golang/github.com/elastic/beats/v7","source":"GO-2026-4789"}],"prev":{"headline":"Improper Validation of Array Index in Packetbeat Leading to Denial of Service","id":"CVE-2026-26932"},"products":["Packetbeat"],"published":"2026-03-19","related":[{"cvss_score":7.5,"headline":"Denial of Service in Packetbeat","id":"CVE-2017-11480","kev_date_added":null,"published":"2017-12-08"},{"cvss_score":6.5,"headline":"Packetbeat Improper Bounds Check","id":"CVE-2025-68381","kev_date_added":null,"published":"2025-12-18"},{"cvss_score":6.5,"headline":"Packetbeat Out-of-bounds Read","id":"CVE-2025-68382","kev_date_added":null,"published":"2025-12-18"},{"cvss_score":5.7,"headline":"Improper Validation of Array Index in Packetbeat Leading to Denial of Service","id":"CVE-2026-26932","kev_date_added":null,"published":"2026-02-26"},{"cvss_score":5.3,"headline":"Elasticsearch Packetbeat has Excessive Allocation of Memory and CPU via Malicious IPv4 Fragments","id":"CVE-2025-68388","kev_date_added":null,"published":"2025-12-18"}],"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":"Go Vulnerability Database","prefix":"GO"},{"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-19","vendors":["Elastic"]},"summary":"An attacker on the same network segment can crash Packetbeat by sending malformed network packets that trigger out-of-bounds reads in protocol parsers.","url":"https://insights.sbomify.com/CVE-2026-26933/"}