{"answers":{"affected":"14 open source packages ship an affected version, including org.bouncycastle:bcpkix-debug-jdk14, org.bouncycastle:bcpkix-debug-jdk15to18 and org.bouncycastle:bcpkix-debug-jdk18on.","exploited":"There is no known exploitation of CVE-2026-5588 in the wild and no public exploit code.","fix":"Upgrade org.bouncycastle:bcpkix-debug-jdk14 to 1.84 or later.","what":"CVE-2026-5588 is a medium-severity vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA, published on 15 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-2026-5588 and fix it if it is affected.\n\nWhat it is: CVE-2026-5588 is a medium-severity vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA, published on 15 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-2026-5588 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.bouncycastle:bcpkix-debug-jdk14 (Maven): affected from 1.49; fixed in 1.84\n- org.bouncycastle:bcpkix-debug-jdk14 (Maven): affected from 1.49; fixed in 1.84\n- org.bouncycastle:bcpkix-debug-jdk15to18 (Maven): affected from 1.49; fixed in 1.84\n- org.bouncycastle:bcpkix-debug-jdk15to18 (Maven): affected from 1.49; fixed in 1.84\n- org.bouncycastle:bcpkix-debug-jdk18on (Maven): affected from 1.49; fixed in 1.84\n- org.bouncycastle:bcpkix-debug-jdk18on (Maven): affected from 1.49; fixed in 1.84\n- org.bouncycastle:bcpkix-jdk14 (Maven): affected from 1.49; fixed in 1.84\n- org.bouncycastle:bcpkix-jdk14 (Maven): affected from 1.49; fixed in 1.84\n- org.bouncycastle:bcpkix-jdk15on (Maven): affected from 1.49; fixed in 1.84\n- org.bouncycastle:bcpkix-jdk15on (Maven): affected from 1.49; fixed in 1.84\n- org.bouncycastle:bcpkix-jdk15to18 (Maven): affected from 1.49; fixed in 1.84\n- org.bouncycastle:bcpkix-jdk15to18 (Maven): affected from 1.49; fixed in 1.84\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-2026-5588/ (Markdown: https://insights.sbomify.com/CVE-2026-5588/index.md)","id":"CVE-2026-5588","markdown":"https://insights.sbomify.com/CVE-2026-5588/index.md","name":"CVE-2026-5588","record":{"aliases":["CLEANSTART-2026-OX95467","CLEANSTART-2026-XR61334","DEBIAN-CVE-2026-5588","ECHO-e567-eb6f-d89b","GHSA-wg6q-6289-32hp","MINI-2fmj-85mm-77mq","MINI-2jc4-mwcr-prh6","MINI-2jc6-3x25-2f5c","MINI-2q2v-fp73-fwv7","MINI-2xhp-w4p8-4wq8","MINI-3xx8-r66r-3cwq","MINI-488x-8pwv-c9gj","MINI-4ghv-fc7w-9fx8","MINI-4pmp-c3pc-wf79","MINI-4r5w-v57c-w266","MINI-4x74-h5p8-qj69","MINI-5cgm-g2qq-3fwv","MINI-6455-vphm-qq9q","MINI-69cj-9r49-274f","MINI-87c2-q7jx-27wg","MINI-8rr4-9wwg-ww92","MINI-92rc-77wq-8jxv","MINI-968w-c5rh-crfc","MINI-9758-72cf-mg3c","MINI-9qfp-5rhj-5fcj","MINI-9r42-3843-wmw6","MINI-9w79-rh32-rp4q","MINI-c8p8-j6fj-vr54","MINI-cjc2-5qc4-8m7f","MINI-cpc5-cc5h-w827","MINI-ffc4-pfv9-57rp","MINI-gg7q-g42p-4rxf","MINI-hqv9-cvwj-m9h3","MINI-jpgc-498j-j779","MINI-mv37-xqxp-8wgj","MINI-p5f6-p37p-c273","MINI-p7w5-35pc-89p9","MINI-pfrv-5h4x-v776","MINI-pj3v-pv8q-8chm","MINI-pmcx-4x22-9655","MINI-pwr9-8w5f-h2mg","MINI-qqpg-jgr3-c857","MINI-r39c-vvvr-7pqw","MINI-r86j-72hj-jv2m","MINI-vhvg-fp62-rwh4","MINI-wm5f-3r9f-28vv","MINI-wwf3-x2r5-4pmw","MINI-x47p-x99x-823f","MINI-x72r-p78w-j6c5","MINI-xjcw-3mwc-27c9","MINI-xqwr-v5rg-phrw","MINI-xrr7-68xc-w3jc","ROOT-APP-MAVEN-CVE-2026-5588","UBUNTU-CVE-2026-5588"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Java cryptography library","requires_auth":"none","summary":"The Bouncy Castle Java library incorrectly accepts empty signature sequences as valid, allowing attackers to bypass cryptographic verification checks.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"bcorg","cpe":[],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/U:Amber","version":"4.0"},"cwes":[{"id":"CWE-347","name":"Improper Verification of Cryptographic Signature"},{"id":"CWE-327","name":"Use of a Broken or Risky Cryptographic Algorithm"}],"description":"Use of a Broken or Risky Cryptographic Algorithm vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix on all (pkix modules), Legion of the Bouncy Castle Inc. BCPKIX-FIPS bcpkix on All (pkix modules), Legion of the Bouncy Castle Inc. BCPIX-LTS bcpkix on All (pkix modules).\n\n This vulnerability is associated with program files JcaContentVerifierProviderBuilder.Java, JcaContentVerfierProviderBuilder.Java.\n\nThis issue affects BC-JAVA: from 1.67 before 1.80.2, from 1.81 before 1.81.1, from 1.82 before 1.84; BCPKIX-FIPS: from 2.0.6 before 2.0.11, from 2.1.7 before 2.1.11; BCPIX-LTS: from 2.73.7 before 2.73.11.","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":"PKIX draft CompositeVerifier accepts empty signature sequence as valid.","id":"CVE-2026-5588","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"weak_cryptography","year":"2026"},"n_packages":14,"n_references":2,"next":{"headline":"Out-of-bounds write caused by an integer underflow in the Bluetooth Mesh subsystem.","id":"CVE-2026-5589"},"packages":[{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-debug-jdk14","purl":null,"source":"GHSA-wg6q-6289-32hp"},{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-debug-jdk14","purl":"pkg:maven/org.bouncycastle/bcpkix-debug-jdk14","source":"GHSA-wg6q-6289-32hp"},{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-debug-jdk15to18","purl":null,"source":"GHSA-wg6q-6289-32hp"},{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-debug-jdk15to18","purl":"pkg:maven/org.bouncycastle/bcpkix-debug-jdk15to18","source":"GHSA-wg6q-6289-32hp"},{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-debug-jdk18on","purl":null,"source":"GHSA-wg6q-6289-32hp"},{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-debug-jdk18on","purl":"pkg:maven/org.bouncycastle/bcpkix-debug-jdk18on","source":"GHSA-wg6q-6289-32hp"},{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-jdk14","purl":null,"source":"GHSA-wg6q-6289-32hp"},{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-jdk14","purl":"pkg:maven/org.bouncycastle/bcpkix-jdk14","source":"GHSA-wg6q-6289-32hp"},{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-jdk15on","purl":null,"source":"GHSA-wg6q-6289-32hp"},{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-jdk15on","purl":"pkg:maven/org.bouncycastle/bcpkix-jdk15on","source":"GHSA-wg6q-6289-32hp"},{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-jdk15to18","purl":null,"source":"GHSA-wg6q-6289-32hp"},{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-jdk15to18","purl":"pkg:maven/org.bouncycastle/bcpkix-jdk15to18","source":"GHSA-wg6q-6289-32hp"},{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-jdk18on","purl":null,"source":"GHSA-wg6q-6289-32hp"},{"ecosystem":"Maven","fixed":["1.84"],"introduced":["1.49"],"last_affected":[],"package":"org.bouncycastle:bcpkix-jdk18on","purl":"pkg:maven/org.bouncycastle/bcpkix-jdk18on","source":"GHSA-wg6q-6289-32hp"}],"prev":{"headline":"wbbeyourself MAC-SQL Refiner Agent agents.py _execute_sql sql injection","id":"CVE-2026-5587"},"products":["BC-JAVA","BCPIX-LTS","BCPKIX-FIPS"],"published":"2026-04-15","related":[],"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":"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":"2026-09-18","vendors":["Legion of the Bouncy Castle Inc."]},"summary":"The Bouncy Castle Java library incorrectly accepts empty signature sequences as valid, allowing attackers to bypass cryptographic verification checks.","url":"https://insights.sbomify.com/CVE-2026-5588/"}