{"id":"CVE-2026-49248","summary":"OneDev: RCE through absolute-path symlink following allows low-privileged users to overwrite arbitrary server via TarUtils.untar","details":"OneDev is a Git server with CI/CD, kanban, and packages. In versions 15.0.6 and below, TarUtils.untar() creates symbolic links verbatim from TAR entry getLinkName() without validating whether the target is an absolute path. A subsequent file entry in the same archive traverses the symlink, writing to arbitrary server-side locations. This is exploitable by any authenticated user with CI Job write access — no admin interaction required. This is an incomplete fix bypass of CVE-2021-21251 (GHSA-2w6j-wc8c-9mq2): that patch blocked .. path segments but did not address absolute symlink targets. This issue has been fixed in version 15.0.7.","aliases":["GHSA-55g8-94r5-cj37"],"modified":"2026-07-08T08:13:39.397468474Z","published":"2026-06-18T19:54:01.665Z","database_specific":{"cwe_ids":["CWE-61"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49248.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49248.json"},{"type":"ADVISORY","url":"https://github.com/theonedev/onedev/security/advisories/GHSA-55g8-94r5-cj37"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49248"},{"type":"FIX","url":"https://github.com/theonedev/onedev/commit/4f8684acebc4bfeefd3c7e23a34a4fd591cb27ad"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/theonedev/onedev","events":[{"introduced":"0"},{"fixed":"4f8684acebc4bfeefd3c7e23a34a4fd591cb27ad"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"15.0.7"}]}}],"versions":["v15.0.6","v15.0.5","v15.0.4","v15.0.3","v15.0.2","v15.0.1","v15.0.0","v14.1.7","v14.1.6","v11.1.6","v14.1.5","v14.1.4","v14.1.3","v14.1.2","v14.1.1","v14.1.0","v14.0.8","v14.0.7","v14.0.6","v14.0.5","v14.0.4","v14.0.3","v14.0.2","v14.0.1","v14.0.0","v13.1.7","v13.1.6","v13.1.4","v13.1.3","v13.1.0","v13.0.10","v13.0.9","v13.0.8","v13.0.7","v13.0.6","v13.0.5","v13.0.4","v13.0.3","v13.0.2","v13.0.1","v13.0.0","v12.0.10","v12.0.9","v12.0.8","v12.0.7","v12.0.6","v12.0.5","v12.0.4","v12.0.3","v12.0.2","v12.0.1","v12.0.0","v11.11.1","v11.11.0","v11.10.4","v11.10.3","v11.10.2","v11.10.1","v11.10.0","v11.9.9","v11.9.8","v11.9.7","v11.9.6","v11.9.5","v11.9.4","v11.9.3","v11.9.2","v11.9.1","v11.8.7","v11.8.6","v11.8.5","v11.8.4","v11.8.3","v11.8.2","v11.8.1","v11.8.0","v11.7.6","vv11.7.5","v11.7.4","v11.7.3","v11.7.2","v11.7.1","v11.7.0","v11.6.16","v11.6.15","v11.6.14","v11.6.13","v11.6.12","v11.6.11","v11.6.10","v11.6.9","v11.6.8","v11.6.7","v11.6.6","v11.6.5","v11.6.4","v11.6.3","v11.6.2","v11.6.1","v11.6.0","v11.5.1","v11.5.0","v11.4.1","v11.4.0","v11.3.2","v11.3.1","v11.3.0","v11.2.1","v11.2.0","v11.1.3","v11.1.2","v11.0.2","v11.1.1","v11.1.0","v11.0.9","v11.0.8","v11.0.7","v11.0.6","v11.0.1","v11.0.0","v10.9.6","v10.9.5","v10.9.4","v10.9.3","v10.9.2","v10.9.1","v10.9.0","v10.8.0","v10.7.7","v10.7.6","v10.7.5","v10.7.3","v10.7.2","v10.7.1","v10.7.0","v10.6.0","v10.5.2","v10.5.1","v10.4.0","v10.3.3","v10.3.2","v10.3.1","v10.3.0","v10.2.1","v10.2.0","v10.1.5","v10.1.4","v10.1.3","v10.1.2","v10.1.1","v10.1.0","v10.0.0","v8.6.12","v8.6.11","v8.6.10","v8.6.9","v8.6.8","v8.6.7","v8.6.6","v8.6.5","v8.6.4","v8.6.2","v8.6.1","v8.6.0","v8.5.9","v8.5.8","v8.5.7","v8.5.6","v8.5.5","v8.5.4","v8.5.3","v8.5.2","v8.5.1","v8.5.0","v8.4.2","v8.4.1","v8.4.0","v8.3.8","v8.3.7","v8.3.6","v8.3.5","v8.3.4","v8.3.3","v8.3.2","v8.3.1","v8.3.0","v8.2.8","v8.2.7","v8.2.5","v8.2.4","v8.2.3","v8.2.2","v8.2.1","v8.2.0","v8.1.6","v8.1.5","v8.1.4","v8.1.3","v8.1.2","v8.1.1","v8.1.0","v8.0.8","v8.0.15","v8.0.14","v8.0.13","v8.0.12","v8.0.11","v8.0.10","v8.0.9","v8.0.7","v8.0.6","v8.0.5","v8.0.4","v8.0.3","v8.0.2","v8.0.1","v8.0.0","v7.9.7","v7.9.6","v7.9.5","v7.9.4","v7.9.3","v7.9.2","v7.9.1","v7.9.0","v7.8.15","v7.8.14","v7.8.13","v7.8.12","v7.8.11","v7.8.10","v7.8.9","v7.8.8","v7.8.7","v7.8.6","v7.8.5","v7.8.4","v7.8.3","v7.8.2","v7.8.1","v7.8.0","v7.7.14","v7.7.13","v7.7.12","v7.7.5","v7.7.2","v7.7.1","v7.6.2","v7.6.1","v7.6.0","v7.5.3","v7.5.2","v7.5.1","v7.5.0","v7.4.29","v7.4.28","v7.4.27","v7.4.26","v7.4.25","v7.4.24","v7.4.23","v7.4.22","v7.4.21","v7.4.20","v7.4.19","v7.4.18","v7.4.17","v7.4.16","v7.4.15","v7.4.14","v7.4.13","v7.4.12","v7.4.11","v7.4.10","v7.4.9","v7.4.8","v7.4.7","v7.4.3","v7.4.2","v7.4.1","v7.4.0","v7.3.15","v7.3.14","v7.3.13","v7.3.12","v7.3.11","v7.3.10","v7.3.9","v7.3.8","v7.3.7","v7.3.6","v7.3.5","v7.3.4","v7.3.3","v7.3.2","v7.3.0","v7.2.9","v7.2.8","v7.2.7","v7.2.5","v7.2.4","v7.2.3","v7.2.2","v7.2.1","v7.2.0","v7.1.8","v7.1.7","v7.1.6","v7.1.3","v7.1.2","v7.1.1","v7.1.0","v7.0.3","v7.0.2","v7.0.1","v7.0.0","v6.3.13","v6.3.12","v6.3.11","v6.3.10","v6.3.9","v6.3.8","v6.3.7","v6.3.6","v6.3.5","v6.3.4","v6.3.3","v6.3.2","v6.3.1","v6.3.0","v6.2.4","v6.2.3","v6.2.2","v6.2.1","v6.2.0","v6.1.4","v6.1.3","v6.1.2","v6.1.1","v6.1.0","v6.0.0","v5.4.0","v5.3.3","v5.3.1","v5.3.0","v5.2.2","v5.2.1","v5.2.0","v5.1.0","v5.0.1","v5.0.0","v4.11.0","v4.10.3","v4.9.2","v4.9.1","v4.9.0","v4.8.1","v4.8.0","v4.7.0","v4.6.1","v4.6.0","v4.4.3","v4.4.2","v4.4.1","v4.4.0","v4.3.2","v4.3.0","v4.2.5","v4.2.4","v4.2.3","v4.2.2","v4.2.1","v4.2.0","v4.1.6","v4.1.5","v4.1.4","v4.1.3","v4.1.2","v4.1.0","v4.0.9","v4.0.8","v4.0.7","v4.0.6","v4.0.5","v4.0.4","v4.0.3","v4.0.2","v4.0.1","v4.0.0","v3.2.4","v3.2.3","v3.2.2","v3.2.1","v3.2.0","v3.1.2","v3.1.1","v3.1.0","v3.0.10","v3.0.9","v3.0.8","v3.0.7","v3.0.6","v3.0.5","v3.0.4","2.0.5","2.0.4","2.0.0","2.0-beta-build120","2.0-beta-build119"],"database_specific":{"source":"https://storage.googleapis.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