{"id":"CVE-2026-82739","aliases":["EEF-CVE-2026-82739","EUVD-2026-68944","GHSA-66cg-vj5m-8w7v"],"status":"published","title":"Ash.Resource.Validation.Confirm leaks a confirmed field's stored value in the atomic mismatch error","description":"Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash discloses the stored value of a confirmed field to an actor who fails its confirmation check.\n\nAsh.Resource.Validation.Confirm's atomic implementation (atomic/2 in lib/ash/resource/validation/confirm.ex) built the mismatch error with its value set to the field being confirmed. When the actor supplies only the confirmation argument and not the field itself, value resolves through atomic_ref/2 to the field's current stored value, so the mismatch error echoes that stored value back to the actor. Against a confirmation guarding a sensitive attribute, an actor can submit a deliberately wrong confirmation and read the real value from the returned error. The fix reports the actor-supplied confirmation in the error instead of the stored field value.\n\nThis issue affects ash: from 2.17.20 before 3.32.2.","severity":{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0018,"percentile":0.07645,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-209"],"published":"2026-09-01T03:27:58Z","modified":"2026-10-28T02:30:59Z","fixes":[{"ecosystem":"Hex","package":"ash","fixed_in":["3.32.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Hex","package":"ash","ranges":[{"type":"SEMVER","events":[{"introduced":"2.17.20"},{"fixed":"3.32.2"}]}],"versions":["2.17.20","2.17.21","2.17.22","2.17.23","2.17.24","2.18.0","2.18.1","2.18.2","2.19.0","2.19.1","2.19.10","2.19.11","2.19.12","2.19.13","2.19.14","2.19.2","2.19.3","2.19.4","2.19.5","2.19.6","2.19.7","2.19.8","2.19.9","2.20.0","2.20.1","2.20.2","2.20.3","2.21.0","2.21.1","2.21.10","2.21.11","2.21.12","2.21.13","2.21.14","2.21.15","2.21.2","2.21.3","2.21.4","2.21.5","2.21.6","2.21.7","2.21.8","2.21.9","3.0.0","3.0.0-rc.0","3.0.0-rc.1","3.0.0-rc.10","3.0.0-rc.11","3.0.0-rc.12","3.0.0-rc.13","3.0.0-rc.14","3.0.0-rc.15","3.0.0-rc.16","3.0.0-rc.17","3.0.0-rc.18","3.0.0-rc.19","3.0.0-rc.20","3.0.0-rc.21","3.0.0-rc.22","3.0.0-rc.23","3.0.0-rc.24","3.0.0-rc.25","3.0.0-rc.26","3.0.0-rc.27","3.0.0-rc.28","3.0.0-rc.29","3.0.0-rc.3","3.0.0-rc.31","3.0.0-rc.32","3.0.0-rc.33","3.0.0-rc.34","3.0.0-rc.35","3.0.0-rc.36","3.0.0-rc.37","3.0.0-rc.38","3.0.0-rc.39","3.0.0-rc.4","3.0.0-rc.40","3.0.0-rc.41","3.0.0-rc.42","3.0.0-rc.43","3.0.0-rc.44","3.0.0-rc.45","3.0.0-rc.46","3.0.0-rc.5","3.0.0-rc.6","3.0.0-rc.7","3.0.0-rc.8","3.0.0-rc.9","3.0.1","3.0.10","3.0.11","3.0.12","3.0.13","3.0.14","3.0.15","3.0.16","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.0.8","3.0.9","3.1.0","3.1.1","3.1.2","3.1.3","3.1.4","3.1.5","3.1.6","3.1.7","3.1.8","3.10.0","3.10.1","3.11.0","3.11.1","3.11.2","3.11.3","3.12.0","3.13.0","3.13.1","3.13.2","3.14.0","3.14.1","3.15.0","3.16.0","3.17.0","3.17.1","3.18.0","3.19.0","3.19.1","3.19.2","3.19.3","3.2.0","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.2.6","3.20.0","3.21.0","3.21.1","3.21.2","3.21.3","3.22.0","3.22.1","3.22.2","3.23.0","3.23.1","3.24.0","3.24.1","3.24.2","3.24.3","3.24.4","3.24.5","3.24.6","3.24.7","3.25.0","3.25.1","3.25.2","3.26.0","3.27.0","3.27.1","3.27.2","3.27.3","3.27.4","3.27.5","3.27.6","3.27.7","3.27.8","3.28.0","3.29.0","3.29.1","3.29.2","3.29.3","3.3.0","3.3.1","3.3.2","3.3.3","3.30.0","3.30.1","3.31.0","3.31.1","3.31.2","3.31.3","3.32.0","3.32.1","3.4.0","3.4.1","3.4.10","3.4.11","3.4.12","3.4.13","3.4.14","3.4.15","3.4.16","3.4.17","3.4.18","3.4.19","3.4.2","3.4.20","3.4.21","3.4.22","3.4.23","3.4.24","3.4.25","3.4.26","3.4.27","3.4.28","3.4.29","3.4.3","3.4.30","3.4.31","3.4.32","3.4.33","3.4.34","3.4.35","3.4.36","3.4.37","3.4.38","3.4.39","3.4.4","3.4.40","3.4.41","3.4.42","3.4.43","3.4.44","3.4.45","3.4.46","3.4.47","3.4.48","3.4.49","3.4.5","3.4.50","3.4.51","3.4.52","3.4.53","3.4.54","3.4.55","3.4.56","3.4.57","3.4.58","3.4.59","3.4.6","3.4.60","3.4.61","3.4.62","3.4.63","3.4.64","3.4.65","3.4.66","3.4.67","3.4.68","3.4.69","3.4.7","3.4.70","3.4.71","3.4.72","3.4.73","3.4.74","3.4.8","3.4.9","3.5.0","3.5.1","3.5.10","3.5.11","3.5.12","3.5.13","3.5.14","3.5.15","3.5.16","3.5.17","3.5.18","3.5.19","3.5.2","3.5.20","3.5.21","3.5.22","3.5.23","3.5.24","3.5.25","3.5.26","3.5.27","3.5.28","3.5.29","3.5.3","3.5.30","3.5.31","3.5.32","3.5.33","3.5.34","3.5.35","3.5.36","3.5.37","3.5.38","3.5.39","3.5.4","3.5.40","3.5.41","3.5.42","3.5.43","3.5.5","3.5.6","3.5.7","3.5.8","3.5.9","3.6.0","3.6.1","3.6.2","3.6.3","3.7.0","3.7.1","3.7.2","3.7.3","3.7.4","3.7.5","3.7.6","3.8.0","3.9.0"]}],"products":[{"vendor":"ash-project","product":"ash"}],"references":[{"url":"https://github.com/ash-project/ash/security/advisories/GHSA-66cg-vj5m-8w7v","tags":["vendor-advisory","related","exploit","advisory"]},{"url":"https://cna.erlef.org/cves/CVE-2026-82739.html","tags":["related","web"]},{"url":"https://osv.dev/vulnerability/EEF-CVE-2026-82739","tags":["related","web"]},{"url":"https://github.com/ash-project/ash/commit/7dfe5f0b1ba4267580ded947dc861351d4dc8e2b","tags":["patch","fix"]},{"url":"https://github.com","tags":["web"]},{"url":"https://repo.hex.pm","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82739.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82739","tags":["advisory"]},{"url":"https://github.com/ash-project/ash","tags":["package"]},{"url":"https://hex.pm/packages/ash","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-82739","title":"Ash.Resource.Validation.Confirm leaks a confirmed field's stored value in the atomic mismatch error","description":"Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash discloses the stored value of a confirmed field to an actor who fails its confirmation check.\n\nAsh.Resource.Validation.Confirm's atomic implementation (atomic/2 in lib/ash/resource/validation/confirm.ex) built the mismatch error with its value set to the field being confirmed. When the actor supplies only the confirmation argument and not the field itself, value resolves through atomic_ref/2 to the field's current stored value, so the mismatch error echoes that stored value back to the actor. Against a confirmation guarding a sensitive attribute, an actor can submit a deliberately wrong confirmation and read the real value from the returned error. The fix reports the actor-supplied confirmation in the error instead of the stored field value.\n\nThis issue affects ash: from 2.17.20 before 3.32.2.","status":"published","published":"2026-09-01T03:27:58.165Z","modified":"2026-09-01T12:44:21.482Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"low","assessor":"cna"}],"cwes":["CWE-209"],"updated_at":"2026-11-02T13:40:46.161838Z"}],"euvd":[{"id":"EUVD-2026-68944","description":"Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash discloses the stored value of a confirmed field to an actor who fails its confirmation check.\n\nAsh.Resource.Validation.Confirm's atomic implementation (atomic/2 in lib/ash/resource/validation/confirm.ex) built the mismatch error with its value set to the field being confirmed. When the actor supplies only the confirmation argument and not the field itself, value resolves through atomic_ref/2 to the field's current stored value, so the mismatch error echoes that stored value back to the actor. Against a confirmation guarding a sensitive attribute, an actor can submit a deliberately wrong confirmation and read the real value from the returned error. The fix reports the actor-supplied confirmation in the error instead of the stored field value.\n\nThis issue affects ash: from 2.17.20 before 3.32.2.","status":"published","published":"2026-09-01T03:27:58Z","modified":"2026-09-01T12:44:21Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"low"}],"updated_at":"2026-11-02T18:01:18.76029Z"}],"nvd":[{"id":"CVE-2026-82739","description":"Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash discloses the stored value of a confirmed field to an actor who fails its confirmation check.\n\nAsh.Resource.Validation.Confirm's atomic implementation (atomic/2 in lib/ash/resource/validation/confirm.ex) built the mismatch error with its value set to the field being confirmed. When the actor supplies only the confirmation argument and not the field itself, value resolves through atomic_ref/2 to the field's current stored value, so the mismatch error echoes that stored value back to the actor. Against a confirmation guarding a sensitive attribute, an actor can submit a deliberately wrong confirmation and read the real value from the returned error. The fix reports the actor-supplied confirmation in the error instead of the stored field value.\n\nThis issue affects ash: from 2.17.20 before 3.32.2.","status":"published","published":"2026-09-01T04:18:03.58Z","modified":"2026-09-01T21:15:00.147Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"}],"cwes":["CWE-209"],"updated_at":"2026-11-02T14:12:43.04945Z"}],"osv":[{"id":"CVE-2026-82739","title":"Ash.Resource.Validation.Confirm leaks a confirmed field's stored value in the atomic mismatch error","description":"Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash discloses the stored value of a confirmed field to an actor who fails its confirmation check.\n\nAsh.Resource.Validation.Confirm's atomic implementation (atomic/2 in lib/ash/resource/validation/confirm.ex) built the mismatch error with its value set to the field being confirmed. When the actor supplies only the confirmation argument and not the field itself, value resolves through atomic_ref/2 to the field's current stored value, so the mismatch error echoes that stored value back to the actor. Against a confirmation guarding a sensitive attribute, an actor can submit a deliberately wrong confirmation and read the real value from the returned error. The fix reports the actor-supplied confirmation in the error instead of the stored field value.\n\nThis issue affects ash: from 2.17.20 before 3.32.2.","status":"published","published":"2026-09-01T03:27:58.165Z","modified":"2026-10-28T02:30:59.338841292Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"low"}],"cwes":["CWE-209"],"updated_at":"2026-11-02T15:45:18.482949Z"},{"id":"EEF-CVE-2026-82739","title":"Ash.Resource.Validation.Confirm leaks a confirmed field's stored value in the atomic mismatch error","description":"## Summary\n\nGeneration of Error Message Containing Sensitive Information vulnerability in ash-project ash discloses the stored value of a confirmed field to an actor who fails its confirmation check.\n\n`Ash.Resource.Validation.Confirm`'s atomic implementation (`atomic/2` in `lib/ash/resource/validation/confirm.ex`) built the mismatch error with its `value` set to the field being confirmed. When the actor supplies only the confirmation argument and not the field itself, `value` resolves through `atomic_ref/2` to the field's current stored value, so the mismatch error echoes that stored value back to the actor. Against a confirmation guarding a sensitive attribute, an actor can submit a deliberately wrong confirmation and read the real value from the returned error. The fix reports the actor-supplied confirmation in the error instead of the stored field value.\n\nThis issue affects ash: from 2.17.20 before 3.32.2.","status":"published","published":"2026-09-01T03:27:58.165Z","modified":"2026-09-08T03:45:08.529249239Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"low"}],"cwes":["CWE-209"],"updated_at":"2026-11-02T15:46:33.520522Z"}]}}