Sogo
CVE-2025-63498
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 6.1 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, user interaction required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.09%. |
| Exploit ScenarioDerived | A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAIv1 – Mar 28, 2026
alinto SOGo 5.12.3 is vulnerable to Cross Site Scripting (XSS) via the "userName" parameter. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. alinto SOGo 5.12.3 is vulnerable to Cross Site Scripting (XSS) via the "userName" parameter. Affected products include: Alinto Sogo, Debian Debian Linux.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
3DescriptionCVE.org
alinto SOGo 5.12.3 is vulnerable to Cross Site Scripting (XSS) via the "userName" parameter.
Executive ViewAI
Organizations using alinto SOGo 5.12.3 should be aware of moderate risk from CVE-2025-63498, a cross-site scripting vulnerability rated CVSS 6.1. Attackers could inject scripts to steal sessions or perform actions as authenticated users. Proof-of-concept code is publicly available. A patch is available and should be applied during regular vulnerability management.
Apply vendor patch. If patching is delayed: implement CSP headers, enable HttpOnly cookies, deploy WAF XSS rules.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.
Affected Products (CPE)CVE.org
Cross-site request forgery (CSRF) vulnerability in SOGo before 3.1.0. Rated high severity (CVSS 8.8), this vulnerability
Alinto Sogo 5.12.3 is vulnerable to Cross Site Scripting (XSS) via the theme parameter.
Password-reset token interception in SOGo before 5.12.11 lets unauthenticated remote attackers redirect account-recovery
Incomplete blacklist in SOGo before 2.3.12 and 3.x before 3.1.1 allows remote authenticated users to obtain sensitive in
SOGo 2.x before 2.4.1 and 3.x through 5.x before 5.1.1 does not validate the signatures of any SAML assertions it receiv
SQL injection in SOGo versions prior to 5.12.7 allows authenticated users to inject arbitrary SQL when changing their pa
SQL injection in Alinto SOGo versions prior to 5.12.7 allows authenticated remote attackers to manipulate database queri
Memory leak in SOGo 2.3.7 allows remote attackers to cause a denial of service (memory consumption) via a large number o
SOGo before version 5.12.5 contains a cross-site scripting (XSS) vulnerability affecting the events, tasks, and contacts
Multiple cross-site scripting (XSS) vulnerabilities in the Web Calendar in SOGo before 2.2.0 allow remote attackers to i
Multiple cross-site scripting (XSS) vulnerabilities in the View Raw Source page in the Web Calendar in SOGo before 3.1.3
Stored XSS in Alinto SOGo's ICS calendar invitation viewer enables a remote unauthenticated attacker to execute arbitrar
Exploit-DB