Ipfire
CVE-2025-50976
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: 0.04%. |
| 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
IPFire 2.29 DNS management interface (dns.cgi) fails to properly sanitize user-supplied input in the NAMESERVER, REMARK, and TLS_HOSTNAME query parameters, resulting in a reflected cross-site. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. 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
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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. IPFire 2.29 DNS management interface (dns.cgi) fails to properly sanitize user-supplied input in the NAMESERVER, REMARK, and TLS_HOSTNAME query parameters, resulting in a reflected cross-site scripting (XSS) vulnerability. Affected products include: Ipfire.
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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
2DescriptionCVE.org
IPFire 2.29 DNS management interface (dns.cgi) fails to properly sanitize user-supplied input in the NAMESERVER, REMARK, and TLS_HOSTNAME query parameters, resulting in a reflected cross-site scripting (XSS) vulnerability.
Executive ViewAI
CVE-2025-50976 presents moderate security risk, 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. Organizations should apply vendor updates when available and monitor for exploitation.
Apply vendor patch. If patching is delayed: implement CSP headers, enable HttpOnly cookies, deploy WAF XSS rules.
Threat Intelligence Overview
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
IPFire 2.19 has a Remote Command Injection vulnerability in ids.cgi via the OINKCODE parameter, which is mishandled by a
lfs/backup in IPFire 2.25-core155 does not ensure that /var/ipfire/backup/bin/backup.pl is owned by the root account. Ra
An authenticated command injection vulnerability exists in IPFire Firewall before 2.21 Core Update 124 in backup.cgi. Ra
IPFire 2.21 Core Update 127 contains multiple stored cross-site scripting vulnerabilities in the extrahd.cgi script that
IPFire 2.21 Core Update 127 contains multiple cross-site scripting vulnerabilities in the ovpnmain.cgi script that allow
IPFire 2.21 Core Update 127 contains multiple reflected cross-site scripting vulnerabilities in the hosts.cgi script tha
IPFire 2.21 Core Update 127 contains a reflected cross-site scripting vulnerability in the updatexlrator.cgi script that
IPFire 2.21 Core Update 127 contains multiple reflected cross-site scripting vulnerabilities in the fwhosts.cgi script t
Command injection in the IPFire URL filter allows an authenticated administrator to execute arbitrary shell commands as
Authenticated command injection in the IPFire firewall distribution prior to 2.29 (Core Update 198) lets a low-privilege
Stored cross-site scripting in the IPFire firewall distribution (versions before 2.29 Core Update 198) lets an authentic
Stored cross-site scripting in IPFire (all releases prior to 2.29 Core Update 198) allows an authenticated user with acc
GitHub PoC
Exploit-DB