What’s Vulnerable › Vulnerabilities

CVE-2020-37284: Sickbeard build-507 Reflected XSS via testNaming pattern Parameter

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-22 · updated 2026-10-28
• Weakness: CWE-79

Description

Sickbeard through build-507 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts through the pattern parameter of /config/postProcessing/testNaming. Attackers can craft GET requests with malicious SVG onload payloads that the testNaming handler returns unescaped, executing JavaScript in victims' browsers. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-22.

Affected products

• midgetspy Sickbeard: through build-507

References

• https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/other/sick-beard-xss.yaml
• https://www.vulncheck.com/advisories/sickbeard-build-507-reflected-xss-via-testnaming-pattern-parameter

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