{"answers":{"affected":"4 open source packages ship an affected version, including org.apache.httpcomponents.core5:httpcore5. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-54399 in the wild and no public exploit code.","fix":"Upgrade org.apache.httpcomponents.core5:httpcore5 to a fixed version for your release line: 5.4.3 or 5.5-beta2.","what":"CVE-2026-54399 is a high-severity denial of service vulnerability in Apache HttpComponents Core, published on 1 Jul 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-2026-54399 and fix it if it is affected.\n\nWhat it is: CVE-2026-54399 is a high-severity denial of service vulnerability in Apache HttpComponents Core, published on 1 Jul 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-2026-54399 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.httpcomponents.core5:httpcore5 (Maven): affected all versions; fixed in 5.4.3\n- org.apache.httpcomponents.core5:httpcore5 (Maven): affected all versions; fixed in 5.4.3\n- org.apache.httpcomponents.core5:httpcore5 (Maven): affected from 5.5-alpha1; fixed in 5.5-beta2\n- org.apache.httpcomponents.core5:httpcore5 (Maven): affected from 5.5-alpha1; fixed in 5.5-beta2\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-2026-54399/ (Markdown: https://insights.sbomify.com/CVE-2026-54399/index.md)","id":"CVE-2026-54399","markdown":"https://insights.sbomify.com/CVE-2026-54399/index.md","name":"CVE-2026-54399","record":{"aliases":["CLEANSTART-2026-AE51081","CLEANSTART-2026-DM76657","CLEANSTART-2026-EL31068","CLEANSTART-2026-PR17240","CLEANSTART-2026-QY36065","CLSA-2026-1789467085","DEBIAN-CVE-2026-54399","ECHO-b453-6acb-8261","GHSA-hf6x-8p5f-cgmf","MINI-28h5-xpg9-c58j","MINI-2pcg-7hx7-hm8q","MINI-2qxw-5f2f-43v7","MINI-2x3j-w372-q539","MINI-3qc2-pmwv-wjww","MINI-3rqr-g9gv-c65f","MINI-43f6-xjhm-6v86","MINI-47w3-59p8-vc2x","MINI-4gwv-r9jv-8xj2","MINI-4j84-php4-6hc9","MINI-4jg5-h249-qw37","MINI-5pfr-cjmp-cg45","MINI-6223-6qh8-jv6h","MINI-64cv-h2hh-3x4g","MINI-6g8c-5h7v-c8g8","MINI-6jrm-vmph-4fwj","MINI-7chp-q8qf-m7m5","MINI-927w-9p26-h3jh","MINI-9h7m-gv65-xcxh","MINI-chx8-4c3g-qw2c","MINI-fqjx-ggpv-7vxh","MINI-frc3-9cg9-3rqq","MINI-gqxh-gxhm-6w24","MINI-hm7r-2gwm-66w8","MINI-m53p-43jv-x93r","MINI-m656-57hp-w485","MINI-mgj5-9rfv-g8gp","MINI-mv96-hjhc-5xjc","MINI-pqjh-j9qc-99h8","MINI-qqpm-hhrx-6hx3","MINI-r5q8-4xfg-gmcw","MINI-v5f4-rhjm-46m8","MINI-vjm3-4v75-v23v","MINI-x2pv-qpm2-4c8j","MINI-xg3w-p38f-xj5h","ROOT-APP-MAVEN-CVE-2026-54399","UBUNTU-CVE-2026-54399"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Java HTTP library","requires_auth":"none","summary":"Remote attackers can cause denial of service via memory exhaustion by sending excessive HTTP headers in Apache HttpComponents Core.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"httpcomponents_core","vendor":"apache"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","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-400","name":"Uncontrolled Resource Consumption"}],"description":"Uncontrolled Resource Consumption vulnerability in the HTTP/1.1 message parser in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending messages with excessive number of headers / excessive header length","ecosystems":["Maven"],"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":"Apache HttpComponents Core: Unbounded HTTP Header/Line Length in Default Configuration","id":"CVE-2026-54399","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":4,"n_references":1,"next":{"headline":"Privilege escalation in UniFi Access Application","id":"CVE-2026-54400"},"packages":[{"ecosystem":"Maven","fixed":["5.4.3"],"introduced":["0"],"last_affected":[],"package":"org.apache.httpcomponents.core5:httpcore5","purl":null,"source":"GHSA-hf6x-8p5f-cgmf"},{"ecosystem":"Maven","fixed":["5.4.3"],"introduced":["0"],"last_affected":[],"package":"org.apache.httpcomponents.core5:httpcore5","purl":"pkg:maven/org.apache.httpcomponents.core5/httpcore5","source":"GHSA-hf6x-8p5f-cgmf"},{"ecosystem":"Maven","fixed":["5.5-beta2"],"introduced":["5.5-alpha1"],"last_affected":[],"package":"org.apache.httpcomponents.core5:httpcore5","purl":null,"source":"GHSA-hf6x-8p5f-cgmf"},{"ecosystem":"Maven","fixed":["5.5-beta2"],"introduced":["5.5-alpha1"],"last_affected":[],"package":"org.apache.httpcomponents.core5:httpcore5","purl":"pkg:maven/org.apache.httpcomponents.core5/httpcore5","source":"GHSA-hf6x-8p5f-cgmf"}],"prev":{"headline":"MISP object edit authorization bypass allows unauthorized sharing group assignment","id":"CVE-2026-54398"},"products":["Apache HttpComponents Core"],"published":"2026-07-01","related":[{"cvss_score":7.5,"headline":"Apache HttpComponents Core: HPackDecoder Unlimited Header List Size Before SETTINGS ACK","id":"CVE-2026-54428","kev_date_added":null,"published":"2026-07-01"}],"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":"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":"2026-07-01","vendors":["Apache Software Foundation"]},"summary":"Remote attackers can cause denial of service via memory exhaustion by sending excessive HTTP headers in Apache HttpComponents Core.","url":"https://insights.sbomify.com/CVE-2026-54399/"}