{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-31931 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-31931 is a high-severity vulnerability in Oisf Suricata, published on 2 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-31931 and fix it if it is affected.\n\nWhat it is: CVE-2026-31931 is a high-severity vulnerability in Oisf Suricata, published on 2 Apr 2026. 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-2026-31931 in the wild and no public exploit code.\n\nAffected product: Oisf Suricata. 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-2026-31931/ (Markdown: https://insights.sbomify.com/CVE-2026-31931/index.md)","id":"CVE-2026-31931","markdown":"https://insights.sbomify.com/CVE-2026-31931/index.md","name":"CVE-2026-31931","record":{"aliases":["DEBIAN-CVE-2026-31931","GHSA-gr22-4784-xvw3","UBUNTU-CVE-2026-31931"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Network IDS/IPS engine","requires_auth":"none","summary":"A null pointer dereference in Suricata's tls.alpn rule keyword allows attackers to crash the service, requiring specific rule configuration.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"suricata","vendor":"oisf"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"Suricata is a network IDS, IPS and NSM engine. From version 8.0.0 to before version 8.0.4, use of the \"tls.alpn\" rule keyword can cause Suricata to crash with a NULL dereference. This issue has been patched in version 8.0.4.","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":"Suricata tls: null dereference in tls.alpn rule keyword","id":"CVE-2026-31931","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"oisf:suricata","products":["oisf:suricata"],"type":"null_dereference","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Suricata krb5: quadratic complexity in krb5 buffering","id":"CVE-2026-31932"},"packages":[],"prev":{"headline":"Daktronics Controller Firmware Use of Hard-coded Credentials","id":"CVE-2026-31928"},"products":["suricata"],"published":"2026-04-02","related":[{"cvss_score":9.8,"headline":"Code injection in n/a","id":"CVE-2023-35853","kev_date_added":null,"published":"2023-06-19"},{"cvss_score":9.8,"headline":"Other in n/a","id":"CVE-2021-37592","kev_date_added":null,"published":"2021-11-19"},{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2018-10244","kev_date_added":null,"published":"2019-04-04"},{"cvss_score":9.4,"headline":"Memory corruption in Suricata","id":"CVE-2026-94083","kev_date_added":null,"published":"2026-09-20"},{"cvss_score":9.4,"headline":"Use after free in Suricata","id":"CVE-2026-94084","kev_date_added":null,"published":"2026-09-20"},{"cvss_score":9.1,"headline":"Suricata http2: protocol-change type confusion can lead to denial of service","id":"CVE-2026-45764","kev_date_added":null,"published":"2026-09-10"},{"cvss_score":8.2,"headline":"Suricata smtp/mime: heap out-of-bounds read quoted-printable decoder","id":"CVE-2026-57228","kev_date_added":null,"published":"2026-09-18"}],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-02","vendors":["OISF"]},"summary":"A null pointer dereference in Suricata's tls.alpn rule keyword allows attackers to crash the service, requiring specific rule configuration.","url":"https://insights.sbomify.com/CVE-2026-31931/"}