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CVE-2026-110826

Full vulnerability record from the local CVENow database.

Description

Improper Session Invalidation after Authentication Credential Change vulnerability in team-alembic ash_authentication allows an attacker holding a victim's session token to stay signed in after the victim resets or changes their password. With apply_on_password_change? true, AshAuthentication.AddOn.LogOutEverywhere.Transformer adds OnPasswordChange to update actions as a global change guarded by where: changing(hashed_password). That condition is evaluated before the action's before_action hooks run, but AshAuthentication.Strategy.Password.HashPasswordChange sets the new hash in a before_action hook, so for every non-atomic password change the condition is false and the user's stored tokens are not revoked. The generated password reset action and the installer's change_password action are both non-atomic. This issue affects ash_authentication: from 4.5.0 before 4.15.1 and from 5.0.0-rc.0 before 5.0.0-rc.16.

Severity
MEDIUM
CVSS score
6.3 (v4.0)
Vulnerability status
Deferred
Source identifier
6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Published
2026-11-03 20:18:06.307000
Last modified
2026-11-03 20:18:06.440000
View original CVE JSON 
{
  "id": "CVE-2026-110826",
  "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
  "published": "2026-11-03T20:18:06.307",
  "lastModified": "2026-11-03T20:18:06.440",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Session Invalidation after Authentication Credential Change vulnerability in team-alembic ash_authentication allows an attacker holding a victim's session token to stay signed in after the victim resets or changes their password.\n\nWith apply_on_password_change? true, AshAuthentication.AddOn.LogOutEverywhere.Transformer adds OnPasswordChange to update actions as a global change guarded by where: changing(hashed_password). That condition is evaluated before the action's before_action hooks run, but AshAuthentication.Strategy.Password.HashPasswordChange sets the new hash in a before_action hook, so for every non-atomic password change the condition is false and the user's stored tokens are not revoked. The generated password reset action and the installer's change_password action are both non-atomic.\n\nThis issue affects ash_authentication: from 4.5.0 before 4.15.1 and from 5.0.0-rc.0 before 5.0.0-rc.16."
    }
  ],
  "affected": [
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "affectedData": [
        {
          "vendor": "team-alembic",
          "product": "ash_authentication",
          "defaultStatus": "unaffected",
          "collectionURL": "https://repo.hex.pm",
          "packageName": "ash_authentication",
          "cpes": [
            "cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "'Elixir.AshAuthentication.AddOn.LogOutEverywhere.Transformer'",
            "'Elixir.AshAuthentication.AddOn.LogOutEverywhere.OnPasswordChange'"
          ],
          "programFiles": [
            "lib/ash_authentication/add_ons/log_out_everywhere/transformer.ex",
            "lib/ash_authentication/add_ons/log_out_everywhere/on_password_change.ex"
          ],
          "programRoutines": [
            {
              "name": "'Elixir.AshAuthentication.AddOn.LogOutEverywhere.Transformer':transform/2"
            },
            {
              "name": "'Elixir.AshAuthentication.AddOn.LogOutEverywhere.OnPasswordChange':change/3"
            }
          ],
          "repo": "https://github.com/team-alembic/ash_authentication",
          "packageURL": "pkg:hex/ash_authentication",
          "versions": [
            {
              "version": "4.5.0",
              "lessThan": "4.15.1",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "5.0.0-rc.0",
              "lessThan": "5.0.0-rc.16",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "team-alembic",
          "product": "ash_authentication",
          "defaultStatus": "unaffected",
          "collectionURL": "https://github.com",
          "packageName": "team-alembic/ash_authentication",
          "cpes": [
            "cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "'Elixir.AshAuthentication.AddOn.LogOutEverywhere.Transformer'",
            "'Elixir.AshAuthentication.AddOn.LogOutEverywhere.OnPasswordChange'"
          ],
          "programFiles": [
            "lib/ash_authentication/add_ons/log_out_everywhere/transformer.ex",
            "lib/ash_authentication/add_ons/log_out_everywhere/on_password_change.ex"
          ],
          "programRoutines": [
            {
              "name": "'Elixir.AshAuthentication.AddOn.LogOutEverywhere.Transformer':transform/2"
            },
            {
              "name": "'Elixir.AshAuthentication.AddOn.LogOutEverywhere.OnPasswordChange':change/3"
            }
          ],
          "repo": "https://github.com/team-alembic/ash_authentication",
          "packageURL": "pkg:github/team-alembic/ash_authentication",
          "versions": [
            {
              "version": "0993f944fbd8d668f941d2ca818da4a1d5917641",
              "lessThan": "*",
              "versionType": "git",
              "status": "affected",
              "changes": [
                {
                  "at": "954697f168d55112b5050acddcd936b8bc1fba2b",
                  "status": "unaffected"
                },
                {
                  "at": "2baef4eddeb604569d3564273d03eeef438e002c",
                  "status": "unaffected"
                }
              ]
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/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",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-11-03T19:39:56.983242Z",
          "id": "CVE-2026-110826",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "references": [
    {
      "url": "https://cna.erlef.org/cves/CVE-2026-110826.html",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    },
    {
      "url": "https://github.com/team-alembic/ash_authentication/commit/0993f944fbd8d668f941d2ca818da4a1d5917641",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    },
    {
      "url": "https://github.com/team-alembic/ash_authentication/commit/2baef4eddeb604569d3564273d03eeef438e002c",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    },
    {
      "url": "https://github.com/team-alembic/ash_authentication/commit/954697f168d55112b5050acddcd936b8bc1fba2b",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    },
    {
      "url": "https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-j6f8-qcj9-gh4r",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    },
    {
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-110826",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    }
  ]
}