Is CVE-2022-30999 in the CISA KEV catalog?

No. CVE-2022-30999 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-30999?

CVE-2022-30999 has a CVSS v3 base score of 8.7 (HIGH).

What is the EPSS score for CVE-2022-30999?

CVE-2022-30999 has an EPSS score of 1.12% (62th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-30999?

Upgrade upload to 1.2.3 or later.

CVE & CISA-KEV Catalog

CVE-2022-30999

HIGH

8.7

CVSS v3

NVD

Description

FriendsofFlarum (FoF) Upload is an extension that handles file uploads intelligently for your forum. If FoF Upload prior to version 1.2.3 is configured to allow the uploading of SVG files ('image/svg+xml'), navigating directly to an SVG file URI could execute arbitrary Javascript code decided by an attacker. This Javascript code could include the execution of HTTP web requests to Flarum, or any other web service. This could allow data to be leaked by an authenticated Flarum user, or, possibly, for data to be modified maliciously. This issue has been patched with v1.2.3, which now sanitizes uploaded SVG files. As a workaround, remove the ability for users to upload SVG files through FoF Upload.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

uploadNVD

Affected:< 1.2.3Fixed in:1.2.3CVE-2022-30999derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Exploit Intelligence

1.12%probability of exploitation in 30 days

62ndpercentile

Moderate risk: more likely to be exploited than 62% of all known CVEs.

References

Patch2

Exploit1

github.com

Third-Party Advisory1

github.com

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.