Xstream — PoC Archivehttps://poc.intelseclab.com/tags/xstream/Latest proof-of-concept entries.Hugoen-usSun, 09 Aug 2026 00:00:00 +0000TeamCity — Unauthenticated RCE via Agent Polling Deserialization (CVE-2026-63077)https://poc.intelseclab.com/pocs/web/2026-08-09_cve-2026-63077-teamcity-preauth-rce/Sun, 09 Aug 2026 00:00:00 +0000https://poc.intelseclab.com/pocs/web/2026-08-09_cve-2026-63077-teamcity-preauth-rce/Critical severity (CVSS 9.8) — web · CVE-2026-63077. Status: Patched. Affects: JetBrains TeamCity (on-premises CI/CD server), agent polling subsystem. Tags: jetbrains, teamcity, preauth-rce, xstream, deserialization, hsqldb, polyglot, jsp, CWE-502, agent-polling, ci-cd.webCriticaljetbrainsteamcitypreauth-rcexstreamdeserializationhsqldbpolyglotjspCWE-502agent-pollingci-cdJenkins ClassFilter Deserialization Bypass → Arbitrary File Read — CVE-2026-53435https://poc.intelseclab.com/pocs/web/2026-07-05_cve-2026-53435-jenkins-deser-file-read/Sun, 05 Jul 2026 00:00:00 +0000https://poc.intelseclab.com/pocs/web/2026-07-05_cve-2026-53435-jenkins-deser-file-read/High severity (CVSS 9.1) — web · CVE-2026-53435 (Jenkins SECURITY-3707). Status: PoC. Affects: Jenkins (core), View configuration (config.xml) deserialization path. Tags: jenkins, deserialization, classfilter-bypass, xstream, config-xml, stapler, arbitrary-file-read, docker-lab, cwe-502.webHighjenkinsdeserializationclassfilter-bypassxstreamconfig-xmlstaplerarbitrary-file-readdocker-labcwe-502