{"id":78969,"date":"2026-05-28T17:46:27","date_gmt":"2026-05-28T14:16:27","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-9828-logback-deserialization-whitelist-bypass-for-java-lang-and-java-util\/"},"modified":"2026-05-28T17:46:27","modified_gmt":"2026-05-28T14:16:27","slug":"cve-2026-9828-logback-deserialization-whitelist-bypass-for-java-lang-and-java-util","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-9828-logback-deserialization-whitelist-bypass-for-java-lang-and-java-util\/","title":{"rendered":"CVE-2026-9828 &#8211; Logback deserialization whitelist bypass for java.lang and java.util"},"content":{"rendered":"<p>CVE ID :CVE-2026-9828<\/p>\n<p>  Published : May 28, 2026, 2:16 p.m. | 15\u00a0minutes ago<\/p>\n<p>  Description :Deserialization of untrusted data vulnerability in QOS.CH Sarl logback logback-core (HardenedObjectInputStream (logback-core) modules) allows Object Injection albeit heavily restricted.<\/p>\n<p>More precisely, an attacker able to influence serialized data sent to<br \/>\nSimpleSocketServer or SimpleSSLSocketServer can instantiate objects from<br \/>\n classes in the java.lang and java.util packages that are not explicitly<br \/>\n blocked.<\/p>\n<p>Although deserialization is heavily restricted by HardenedObjectInputStream and no<br \/>\npractical way to achieve remote code execution or significant privilege<br \/>\nescalation has been identified, this issue constitutes a bypass of the<br \/>\nintended security restrictions.<\/p>\n<p>This issue affects logback: through 1.5.32 inclusive.<\/p>\n<p>  Severity: 1.2 | LOW<\/p>\n<p>  Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID :CVE-2026-9828 Published : May 28, 2026, 2:16 p.m. | 15\u00a0minutes ago Description :Deserialization of untrusted data vulnerability in QOS.CH Sarl logback logback-core (HardenedObjectInputStream (logback-core) modules) allows Object Injection albeit heavily restricted. More precisely, an attacker able to influence serialized data sent to SimpleSocketServer or SimpleSSLSocketServer can instantiate objects from classes in the java.lang &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-78969","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78969","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=78969"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78969\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=78969"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=78969"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=78969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}