> CVE-2026-81632 [HIGH]

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PUBLISHED
2026-09-17 14:17
MODIFIED
2026-09-17 14:17
CVSS_SCORE V3
7.2
EPSS (Prob. Exploit)
0.21%
Top 89.4%
DATA SOURCES:
NVD đź”— 2026-09-17 CWE MITRE đź”— 2026-10-01 FIRST EPSS đź”— 2026-10-16 OSV đź”— 2026-09-23

> DESCRIPTION

Use of HTTP Request With Sensitive Query String vulnerability in team-alembic AshAuthenticationPhoenix allows someone able to read access logs, proxy logs or browser history to recover a single-use sign-in token and authenticate as its owner. After a successful password sign-in, AshAuthentication.Phoenix.Components.Password.SignInForm builds the sign_in_with_token path with the freshly issued user.__metadata__.token as a query parameter and redirects the browser to it with a GET. The token therefore travels in the request line, where web servers, reverse proxies, request telemetry and the browser's own history record it, all of which outlive the request and are ordinarily less protected than session storage. The redirect destination is restricted to a local path, so this is not an open redirect; the exposure is the retention of a live credential. This issue affects ash_authentication_phoenix: from 1.7.0 before 2.17.4 and from 3.0.0-rc.0 before 3.0.0-rc.11; ash_authentication: from 3.10.5 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/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

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/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
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Local (L)
Exploit nécessite un accès local au système
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-598

> CWE DETAILED DESCRIPTIONS

CWE-598: Use of HTTP Request With Sensitive Query String - The web application uses an HTTP method to process a request, but the request includes sensitive information in the query string.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Single-use sign-in token placed in a redirect query string in AshAuthenticationPhoenix

AFFECTED PACKAGES:
Unknown / Unknown
217 versions affected
ALIASES:
EEF-CVE-2026-81632, GHSA-8jh5-339h-mqx9

> HISTORIQUE DES MODIFICATIONS

Première apparition
17/09/2026 14:17
Source: NVD
📊 ENRICHISSEMENT 01/10/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-598: Use of HTTP Request With Sensitive Query String - The web application uses an HTTP method to process a request, but the request includes sensitive information in the query string.
Total des modifications: 1 Dernière mise à jour: 3 weeks ago

> REFERENCES

https://cna.erlef.org/cves/CVE-2026-81632.html
https://github.com/team-alembic/ash_authentication/commit/8d8ddd25c69b669a92a701...
https://github.com/team-alembic/ash_authentication/commit/bbf345c1bb7aa28bce5dd8...
https://github.com/team-alembic/ash_authentication/commit/eca8cadea0f1595ed2c10a...
https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-j726...
https://github.com/team-alembic/ash_authentication_phoenix/commit/903f3a386e1aba...
https://github.com/team-alembic/ash_authentication_phoenix/commit/920257d0460b9c...
https://github.com/team-alembic/ash_authentication_phoenix/commit/ff5ad8737748af...
https://github.com/team-alembic/ash_authentication_phoenix/security/advisories/G...
https://osv.dev/vulnerability/EEF-CVE-2026-81632
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