{"id":"CVE-2019-13126","aliases":["EUVD-2021-1121","GHSA-jp4j-47f9-2vc3","GO-2022-0852"],"status":"published","title":"Integer Overflow or Wraparound in NATS Server","description":"An integer overflow in NATS Server before 2.0.2 allows a remote attacker to crash the server by sending a crafted request. If authentication is enabled, then the remote attacker must have first authenticated.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01773,"percentile":0.78334,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-190"],"published":"2019-07-29T16:07:16Z","modified":"2026-10-20T10:50:59Z","fixes":[{"ecosystem":"Go","package":"github.com/nats-io/nats-server/v2","fixed_in":["2.2.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/nats-io/nats-server/v2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/nats-io/nats-server/v2","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.2.0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/nats-io/nats-server","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/nats-io/nats-server/v2","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.2.0"}]}]}],"products":[{"vendor":"linuxfoundation","product":"nats-server"}],"references":[{"url":"https://www.twistlock.com/labs-blog/finding-dos-vulnerability-nats-go-fuzz-cve-2019-13126/","tags":["x_refsource_MISC","x_transferred","Broken Link","article"]},{"url":"https://github.com/nats-io/nats-server/pull/1053","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-13126","tags":["advisory"]},{"url":"https://github.com/nats-io/nats-server/pull/1441","tags":["web","fix"]},{"url":"https://github.com/nats-io/nats-server/commit/07ef71ff98f45f8c2711be4aeaf484610d891dda","tags":["web","fix"]},{"url":"https://github.com/nats-io/nats-server/commits/master","tags":["web","fix"]},{"url":"https://github.com/advisories/GHSA-jp4j-47f9-2vc3","tags":["advisory"]},{"url":"https://www.twistlock.com/labs-blog/finding-dos-vulnerability-nats-go-fuzz-cve-2019-13126","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2019-13126","description":"An integer overflow in NATS Server before 2.0.2 allows a remote attacker to crash the server by sending a crafted request. If authentication is enabled, then the remote attacker must have first authenticated.","status":"published","published":"2019-07-29T16:07:16Z","modified":"2024-08-04T23:41:10.466Z","updated_at":"2026-11-02T14:20:24.025419Z"}],"euvd":[{"id":"EUVD-2021-1121","description":"An integer overflow in NATS Server before 2.0.2 allows a remote attacker to crash the server by sending a crafted request. If authentication is enabled, then the remote attacker must have first authenticated.","status":"published","published":"2019-07-29T16:07:16Z","modified":"2024-08-04T23:41:10Z","updated_at":"2026-11-03T02:40:43.368399Z"}],"ghsa":[{"id":"GHSA-jp4j-47f9-2vc3","title":"Integer Overflow or Wraparound in NATS Server","description":"An integer overflow in NATS Server before 2.2.0 allows a remote attacker to crash the server by sending a crafted request.\n\n### Specific Go Packages Affected\ngithub.com/nats-io/nats-server/v2/server","status":"published","published":"2021-05-18T18:14:55Z","modified":"2023-09-29T16:34:00Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:37:06.913882Z"}],"nvd":[{"id":"CVE-2019-13126","description":"An integer overflow in NATS Server before 2.0.2 allows a remote attacker to crash the server by sending a crafted request. If authentication is enabled, then the remote attacker must have first authenticated.","status":"published","published":"2019-07-29T17:15:11.467Z","modified":"2026-06-17T02:16:07.397Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:05:21.892729Z"}],"osv":[{"id":"CVE-2019-13126","description":"An integer overflow in NATS Server before 2.0.2 allows a remote attacker to crash the server by sending a crafted request. If authentication is enabled, then the remote attacker must have first authenticated.","status":"published","published":"2019-07-29T17:15:11.467Z","modified":"2026-10-20T10:50:59.572943512Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:11.029493Z"},{"id":"GHSA-jp4j-47f9-2vc3","title":"Integer Overflow or Wraparound in NATS Server","description":"An integer overflow in NATS Server before 2.2.0 allows a remote attacker to crash the server by sending a crafted request.\n\n### Specific Go Packages Affected\ngithub.com/nats-io/nats-server/v2/server","status":"published","published":"2021-05-18T18:14:55Z","modified":"2026-09-10T03:49:05.035658757Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T15:46:50.687609Z"},{"id":"GO-2022-0852","title":"Integer Overflow or Wraparound in NATS Server in github.com/nats-io/nats-server","description":"Integer Overflow or Wraparound in NATS Server in github.com/nats-io/nats-server","status":"published","published":"2024-08-21T15:29:04Z","modified":"2026-02-04T03:32:18.60664Z","updated_at":"2026-11-02T15:47:00.918515Z"}]}}