Is CVE-2021-4312 in the CISA KEV catalog?

No. CVE-2021-4312 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-4312?

CVE-2021-4312 has a CVSS v3 base score of 3.5 (LOW).

What is the EPSS score for CVE-2021-4312?

CVE-2021-4312 has an EPSS score of 0.52% (40th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-4312?

Upgrade rapidleech to 2021-09-11 or later.

CVE & CISA-KEV Catalog

CVE-2021-4312

LOW

3.5

CVSS v3

NVD

Description

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability classified as problematic has been found in Th3-822 Rapidleech. This affects the function zip_go of the file classes/options/zip.php. The manipulation of the argument archive leads to cross site scripting. It is possible to initiate the attack remotely. The patch is named 885a87ea4ee5e14fa95801eca255604fb2e138c6. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-218295. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

rapidleechNVD

Affected:< 2021-09-11Fixed in:2021-09-11CVE-2021-4312derived 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

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.52%probability of exploitation in 30 days

40thpercentile

Moderate risk: more likely to be exploited than 40% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory2

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.