#VU28188 Cross-site scripting in Contentful - CVE-2020-13258
Published: May 22, 2020
Vulnerability identifier: #VU28188
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Clear
CVE-ID: CVE-2020-13258
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Contentful
Contentful
Software vendor:
Contentful
Contentful
Description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data, as demonstrated by the api parameter to the-example-app.py. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
PoC:
https://[host]/?cda'"<evil><script>alert(1)</script>&locale=locale=de-DE
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.