Caddy
CVE-2017-5963
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: 0.23%. |
| 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 meAnalysisAI
An issue was discovered in caddy (for TYPO3) before 7.2.10. 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
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. An issue was discovered in caddy (for TYPO3) before 7.2.10. The vulnerability exists due to insufficient filtration of user-supplied data in the "paymillToken" HTTP POST parameter passed to the "caddy/Resources/Public/JavaScript/e-payment/paymill/api/php/payment.php" URL. An attacker could execute arbitrary HTML and script code in a browser in the context of the vulnerable website. Affected products include: Caddy Project Caddy. Version information: before 7.2.10..
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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
DescriptionCVE.org
An issue was discovered in caddy (for TYPO3) before 7.2.10. The vulnerability exists due to insufficient filtration of user-supplied data in the "paymillToken" HTTP POST parameter passed to the "caddy/Resources/Public/JavaScript/e-payment/paymill/api/php/payment.php" URL. An attacker could execute arbitrary HTML and script code in a browser in the context of the vulnerable website.
Threat Intelligence Overview
NVD
CVE.org
EPSS
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
Denial of service against HTTP/2 server implementations allows remote unauthenticated attackers to exhaust server resour
FastCGI path splitting vulnerability in Caddy before 2.11.1 allows request smuggling or path confusion when proxying to
TLS error swallowing in Caddy web server before 2.11.1 allows bypassing client certificate authentication. Errors in Cli
Host header case sensitivity bypass in Caddy before 2.11.1. Virtual host routing can be bypassed by using alternate casi
Case sensitivity bypass in Caddy web server path matching before 2.11.1. HTTP path matchers can be bypassed using altern
Caddy versions 2.10.0 through 2.11.1 fail to strip client-supplied headers in the forward_auth copy_headers directive, e
Caddy versions 2.7.5 through 2.11.1 contain a template injection vulnerability in the vars_regexp matcher that allows re
An out-of-bounds read in the rewrite function at /modules/caddyhttp/rewrite/rewrite.go in Caddy v2.5.1 allows attackers
A configuration-gated information-disclosure flaw in Caddy 2.11.3 and earlier allows an unauthenticated remote attacker
Caddy versions prior to 2.11.1 fail to sanitize backslashes in file path matching, allowing attackers to bypass path-bas
Caddy versions prior to 2.11.1 allow unauthenticated cross-origin requests to the admin API when origin enforcement is d
Caddy through 0.11.0 sends incorrect certificates for certain invalid requests, making it easier for attackers to enumer
GitHub PoC
Exploit-DB