{"id":"CVE-2026-26201","summary":"emp3r0r Affected by Concurrent Map Access DoS (panic/crash)","details":"emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 3.21.2, multiple shared maps are accessed without consistent synchronization across goroutines. Under concurrent activity, Go runtime can trigger `fatal error: concurrent map read and map write`, causing C2 process crash (availability loss). Version 3.21.2 fixes this issue.","aliases":["GHSA-f5p9-j34q-pwcc","GO-2026-4504"],"modified":"2026-04-02T13:19:15.313283Z","published":"2026-02-19T19:21:05.691Z","related":["SUSE-SU-2026:0757-1"],"database_specific":{"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26201.json","cwe_ids":["CWE-362","CWE-663"]},"references":[{"type":"WEB","url":"https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26201.json"},{"type":"ADVISORY","url":"https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-f5p9-j34q-pwcc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26201"},{"type":"FIX","url":"https://github.com/jm33-m0/emp3r0r/commit/ea4d074f081dac6293f3aec38f01def5f08d5af5"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/jm33-m0/emp3r0r","events":[{"introduced":"0"},{"fixed":"88d8c0480db31ed4daa0e463aaace1c6d90c45c6"}]}],"versions":["v0.1","v0.2","v0.3","v0.4","v0.5","v0.6","v0.6.1","v0.6.2","v0.7","v0.8","v0.8.1","v0.8.2","v0.8.3","v0.8.4","v0.8.5","v0.8.6","v0.8.7","v0.8.8","v0.8.9","v0.9.0","v0.9.1","v0.9.10","v0.9.11","v0.9.12","v0.9.13","v0.9.14","v0.9.15","v0.9.16","v0.9.17","v0.9.18","v0.9.19","v0.9.2","v0.9.20","v0.9.21","v0.9.22","v0.9.23","v0.9.24","v0.9.25","v0.9.26","v0.9.27","v0.9.28","v0.9.29","v0.9.3","v0.9.30","v0.9.31","v0.9.32","v0.9.33","v0.9.34","v0.9.35","v0.9.36","v0.9.37","v0.9.38","v0.9.39","v0.9.4","v0.9.40","v0.9.41","v0.9.42","v0.9.43","v0.9.44","v0.9.45","v0.9.46","v0.9.5","v0.9.6","v0.9.7","v0.9.8","v0.9.9","v1.0.0","v1.0.1","v1.1.0","v1.1.1","v1.1.10","v1.1.11","v1.1.12","v1.1.2","v1.1.3","v1.1.4","v1.1.5","v1.1.6","v1.1.7","v1.1.8","v1.1.9","v1.10.0","v1.10.1","v1.10.2","v1.10.3","v1.10.4","v1.10.5","v1.10.6","v1.10.7","v1.11.0","v1.12.0","v1.13.0","v1.14.0","v1.14.1","v1.14.2","v1.14.3","v1.14.4","v1.14.5","v1.14.6","v1.14.7","v1.15.0","v1.15.1","v1.15.2","v1.15.3","v1.15.4","v1.15.5","v1.15.6","v1.15.7","v1.15.8","v1.15.9","v1.16.0","v1.16.1","v1.16.2","v1.17.0","v1.17.1","v1.17.2","v1.17.3","v1.17.4","v1.17.5","v1.18.0","v1.19.0","v1.19.1","v1.2.0","v1.2.1","v1.2.2","v1.2.3","v1.2.4","v1.2.5","v1.20.0","v1.21.0","v1.22.0","v1.22.1","v1.22.2","v1.22.3","v1.23.0","v1.23.1","v1.23.2","v1.23.3","v1.23.4","v1.23.5","v1.23.6","v1.24.0","v1.24.1","v1.24.2","v1.25.0","v1.25.1","v1.25.2","v1.25.3","v1.25.4","v1.25.5","v1.25.6","v1.25.7","v1.25.8","v1.26.0","v1.26.1","v1.26.2","v1.26.3","v1.26.4","v1.26.5","v1.26.6","v1.26.7","v1.26.8","v1.27.0","v1.27.1","v1.27.2","v1.27.3","v1.28.0","v1.29.0","v1.29.1","v1.29.2","v1.29.3","v1.29.4","v1.29.5","v1.29.6","v1.29.7","v1.3.0","v1.3.1","v1.3.10","v1.3.11","v1.3.12","v1.3.13","v1.3.14","v1.3.15","v1.3.16","v1.3.17","v1.3.18","v1.3.19","v1.3.2","v1.3.20","v1.3.3","v1.3.4","v1.3.5","v1.3.6","v1.3.7","v1.3.8","v1.3.9","v1.30.0","v1.30.1","v1.30.2","v1.30.3","v1.30.4","v1.30.5","v1.31.0","v1.31.1","v1.31.10","v1.31.11","v1.31.12","v1.31.2","v1.31.3","v1.31.4","v1.31.5","v1.31.6","v1.31.7","v1.31.8","v1.31.9","v1.32.0","v1.32.1","v1.32.2","v1.32.3","v1.32.4","v1.32.5","v1.33.0","v1.33.1","v1.33.2","v1.33.3","v1.33.4","v1.33.5","v1.34.0","v1.34.1","v1.34.10","v1.34.2","v1.34.3","v1.34.4","v1.34.5","v1.34.6","v1.34.7","v1.34.8","v1.34.9","v1.35.0","v1.35.1","v1.35.2","v1.35.3","v1.36.0","v1.37.0","v1.37.1","v1.37.2","v1.37.3","v1.37.4","v1.37.5","v1.37.6","v1.37.7","v1.37.8","v1.38.0","v1.38.1","v1.38.2","v1.38.3","v1.38.4","v1.39.0","v1.39.1","v1.39.2","v1.39.3","v1.39.4","v1.39.5","v1.39.6","v1.39.7","v1.39.8","v1.39.9","v1.4.0","v1.4.1","v1.40.0","v1.40.1","v1.40.2","v1.40.3","v1.41.0","v1.42.0","v1.42.1","v1.43.0","v1.43.1","v1.43.2","v1.43.3","v1.43.4","v1.44.0","v1.44.1","v1.44.2","v1.44.3","v1.44.4","v1.45.0","v1.45.1","v1.45.2","v1.46.0","v1.46.1","v1.47.0","v1.47.1","v1.48.0","v1.48.1","v1.48.10","v1.48.2","v1.48.3","v1.48.4","v1.48.5","v1.48.6","v1.48.7","v1.48.8","v1.48.9","v1.49.0","v1.49.1","v1.49.2","v1.49.3","v1.49.4","v1.49.5","v1.5.0","v1.5.1","v1.50.0","v1.50.1","v1.50.2","v1.50.3","v1.51.0","v1.51.1","v1.6.0","v1.6.1","v1.6.10","v1.6.11","v1.6.12","v1.6.13","v1.6.2","v1.6.3","v1.6.4","v1.6.5","v1.6.6","v1.6.7","v1.6.8","v1.6.9","v1.7.0","v1.7.1","v1.7.2","v1.7.3","v1.7.4","v1.7.5","v1.7.6","v1.8.0","v1.8.1","v1.9.0","v2.0.0","v2.1.0","v2.2.0","v2.2.1","v2.2.10","v2.2.11","v2.2.12","v2.2.2","v2.2.3","v2.2.4","v2.2.5","v2.2.6","v2.2.7","v2.2.8","v2.2.9","v2.3.0","v2.4.0","v2.4.1","v2.4.2","v2.4.3","v2.4.4","v2.4.5","v2.4.6","v3.0.0","v3.1.0","v3.1.1","v3.1.2","v3.1.3","v3.1.4","v3.10.0","v3.10.1","v3.10.2","v3.10.3","v3.11.0","v3.11.1","v3.12.0","v3.13.0","v3.13.1","v3.13.2","v3.14.0","v3.14.1","v3.15.0","v3.15.1","v3.16.0","v3.16.1","v3.16.2","v3.17.0","v3.17.1","v3.18.0","v3.18.1","v3.19.0","v3.19.1","v3.19.2","v3.19.3","v3.19.4","v3.2.0","v3.2.1","v3.2.2","v3.20.0","v3.20.1","v3.20.2","v3.21.0","v3.21.1","v3.3.0","v3.3.1","v3.3.2","v3.4.0","v3.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