> CVE-2026-86522 [MEDIUM]

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PUBLISHED
2026-09-17 14:17
MODIFIED
2026-09-17 14:17
CVSS_SCORE V3
6.3
EPSS (Prob. Exploit)
0.74%
Top 46.5%
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

Improper Output Neutralization for Logs vulnerability in team-alembic AshAuthentication allows an unauthenticated attacker to forge application log entries by submitting a password reset identity containing newlines or control characters. AshAuthentication.Strategy.Password.RequestPasswordReset.run/3 interpolates the identity argument, the email or username taken straight from the reset request, into its Logger.warning/1 heredocs without escaping, truncating or type-restricting it. The resource logged beside it is passed through inspect/1, which would have neutralized the value. A newline in the identity therefore ends the log record, and everything after it is written as a line of its own, so an attacker chooses the severity tag and the content of entries that appear to have come from the application. This issue affects ash_authentication: from 4.2.0 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:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/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:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/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
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
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
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
Low (L)
Modification limitée des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
Low
Modification limitée des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-117

> CWE DETAILED DESCRIPTIONS

CWE-117: Improper Output Neutralization for Logs - The product constructs a log message from external input, but it does not neutralize or incorrectly neutralizes special elements when the message is written to a log file.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Log injection via an unescaped password reset identity in AshAuthentication

AFFECTED PACKAGES:
Unknown / Unknown
90 versions affected
ALIASES:
EEF-CVE-2026-86522, GHSA-wg7g-r393-vr3g

> 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-117: Improper Output Neutralization for Logs - The product constructs a log message from external input, but it does not neutralize or incorrectly neutralizes special elements when the message is ...
Total des modifications: 1 Dernière mise à jour: 3 weeks ago

> REFERENCES

https://cna.erlef.org/cves/CVE-2026-86522.html
https://github.com/team-alembic/ash_authentication/commit/3954f277929712755aef57...
https://github.com/team-alembic/ash_authentication/commit/57c7cc3236bef0fa9da19c...
https://github.com/team-alembic/ash_authentication/commit/fd19358bf0eee53ef13dcf...
https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-wg7g...
https://osv.dev/vulnerability/EEF-CVE-2026-86522
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