CVE-2020-6804
CVE-2020-6804 is a high-severity vulnerability in Mozilla Webthings Gateway with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (50th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Mozilla Webthings Gateway
- Published:
- Last modified:
Description
A reflected XSS vulnerability exists within the gateway, allowing an attacker to craft a specialized URL which could steal the user's authentication token. When combined with CVE-2020-6803, an attacker could fully compromise the system.
Frequently asked questions
- What is CVE-2020-6804?
- A reflected XSS vulnerability exists within the gateway, allowing an attacker to craft a specialized URL which could steal the user's authentication token. When combined with CVE-2020-6803, an attacker could fully compromise the system.
- How severe is CVE-2020-6804?
- CVE-2020-6804 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-6804 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-6804?
- CVE-2020-6804 affects Mozilla Webthings Gateway. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-6804?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-6804 published?
- CVE-2020-6804 was published on 2020-02-28 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:mozilla:webthings_gateway:*:*:*:*:*:*:*:*
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