{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-105111","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","state":"PUBLISHED","assignerShortName":"apache","dateReserved":"2026-10-03T12:02:46.675Z","datePublished":"2026-10-06T19:44:18.075Z","dateUpdated":"2026-10-07T06:11:54.071Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache","dateUpdated":"2026-10-06T19:44:18.075Z"},"title":"Apache Commons BCEL: Class2HTML emits unescaped class strings, enabling stored XSS","problemTypes":[{"descriptions":[{"description":"CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')","lang":"en","cweId":"CWE-79","type":"CWE"}]}],"source":{"discovery":"INTERNAL"},"affected":[{"vendor":"Apache Software Foundation","product":"Apache Commons BCEL","packageURL":"pkg:maven/org.apache.bcel/bcel","repo":"https://gitbox.apache.org/repos/asf/commons-bcel.git","versions":[{"status":"affected","version":"0","lessThan":"6.13.0","versionType":"maven"},{"status":"affected","version":"0","lessThan":"fb72c225cbc6ec3d94060ed6edb269f07428d504","versionType":"git"}],"defaultStatus":"unaffected","collectionURL":"https://repo.maven.apache.org/maven2","packageName":"org.apache.bcel:bcel"}],"descriptions":[{"value":"Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Commons BCEL.\n\n\n\nThis only happens when you're using Class2HTML to generate webpages for possibly-attacker-controlled class files, where Class2HTML emitters write attacker class-file strings into HTML unescaped (stored XSS in reports).\n\n\n\nThis issue affects Apache Commons BCEL: before 6.13.0.\n\n\n\nUsers are recommended to upgrade to version 6.13.0, which fixes the issue.","lang":"en","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Commons BCEL.</p><p>This only happens when you're using <code>Class2HTML</code> to generate webpages for possibly-attacker-controlled class files, where <code>Class2HTML</code> emitters write attacker class-file strings into HTML unescaped (stored XSS in reports).</p><p>This issue affects Apache Commons BCEL: before 6.13.0.</p><p>Users are recommended to upgrade to version 6.13.0, which fixes the issue.</p>"}]}],"references":[{"url":"https://github.com/apache/commons-bcel/commit/fb72c225cbc6ec3d94060ed6edb269f07428d504.patch","tags":["patch"]},{"url":"https://lists.apache.org/thread.html/co1wfk2lyrmpnfhn49o370pvfl978rw6","tags":["vendor-advisory"]}],"metrics":[{"scenarios":[{"lang":"en","value":"GENERAL"}],"format":"CVSS","cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseSeverity":"MEDIUM","baseScore":4.7,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N"}},{"scenarios":[{"lang":"en","value":"GENERAL"}],"format":"CVSS","cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","subIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"LOW","baseScore":2.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"}},{"other":{"type":"Textual description of severity","content":{"text":"low"}},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"credits":[{"lang":"en","value":"The Apache Software Foundation","type":"finder"},{"lang":"en","value":"Claude Security","type":"tool"}],"x_generator":{"engine":"Vulnogram 1.0.3"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-06T19:58:48.850537Z","id":"CVE-2026-105111","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-06T19:58:59.113Z"}},{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/10/07/13"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-10-07T06:11:54.071Z"}}]}}