{"cve":"CVE-2026-9828","nvd":{"published":"2026-05-28T14:16:27.430","modified":"2026-10-26T11:10:00.157","status":"Deferred","description":"Deserialization of untrusted data vulnerability in QOS.CH Sarl logback logback-core (HardenedObjectInputStream (logback-core) modules) allows Object Injection albeit heavily restricted.\n\nMore precisely, an attacker able to influence serialized data sent to \nSimpleSocketServer or SimpleSSLSocketServer can instantiate objects from\n classes in the java.lang and java.util packages that are not explicitly\n blocked.\n\nAlthough deserialization is heavily restricted by HardenedObjectInputStream and no \npractical way to achieve remote code execution or significant privilege \nescalation has been identified, this issue constitutes a bypass of the \nintended security restrictions.\n\n\n\nThis issue affects logback: through 1.5.32 inclusive.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:P/RE:L/U:Green","score":2.9},"cvss_v3":null,"cwes":["CWE-502"],"references":["https://logback.qos.ch/news.html#1.5.33"],"products":[],"source":"nvd","synced_at":"2026-10-26T11:33:08.859761529+00:00"},"epss":{"cve":"CVE-2026-9828","score":0.0037,"percentile":0.30599,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-p47f-322f-whfh","url":"https://osv.dev/vulnerability/GHSA-p47f-322f-whfh","summary":"QOS.CH Sarl logback logback-core has a deserialization of untrusted data vulnerability","modified":"2026-09-10T03:50:47.152421417Z","packages":[{"ecosystem":"Maven","name":"ch.qos.logback:logback-core","purl":"pkg:maven/ch.qos.logback/logback-core","ranges":["<1.5.33"],"fixed":["1.5.33"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}