CVE-2025-5323: fossasia open-event-server Mail Verification mail.py send_email_change_user_email reliance on obfuscation or encryption of security-relevant inputs...
Description
A vulnerability, which was classified as problematic, has been found in fossasia open-event-server 1.19.1. This issue affects the function send_email_change_user_email of the file /fossasia/open-event-server/blob/development/app/api/helpers/mail.py of the component Mail Verification Handler. The manipulation leads to reliance on obfuscation or encryption of security-relevant inputs without integrity checking. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way. Eine Schwachstelle wurde in fossasia open-event-server 1.19.1 entdeckt. Sie wurde als problematisch eingestuft. Betroffen davon ist die Funktion send_email_change_user_email der Datei /fossasia/open-event-server/blob/development/app/api/helpers/mail.py der Komponente Mail Verification Handler. Durch das Manipulieren mit unbekannten Daten kann eine reliance on obfuscation or encryption of security-relevant inputs without integrity checking-Schwachstelle ausgenutzt werden. Die Umsetzung des Angriffs kann dabei über das Netzwerk erfolgen. Die Komplexität eines Angriffs ist eher hoch. Die Ausnutzbarkeit gilt als schwierig. Der Exploit steht zur öffentlichen Verfügung.
Classification
CVE ID: CVE-2025-5323
CVSS Base Severity: MEDIUM
CVSS Base Score: 6.3
CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Problem Types
Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking Missing Cryptographic StepAffected Products
Vendor: fossasia
Product: open-event-server
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.01% (probability of being exploited)
EPSS Percentile: 0.22% (scored less or equal to compared to others)
EPSS Date: 2025-06-17 (when was this score calculated)
Stakeholder-Specific Vulnerability Categorization (SSVC)
SSVC Exploitation: poc
SSVC Technical Impact: partial
SSVC Automatable: false
References
https://nvd.nist.gov/vuln/detail/CVE-2025-5323https://vuldb.com/?id.310493
https://vuldb.com/?ctiid.310493
https://vuldb.com/?submit.580256
https://gist.github.com/superboy-zjc/31ecea91b304b8dd9871ad507467ca61
https://gist.github.com/superboy-zjc/31ecea91b304b8dd9871ad507467ca61#proof-of-concept