How severe is CVE-2020-35579?

CVE-2020-35579 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-35579 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35579?

CVE-2020-35579 affects Subconverter Project Subconverter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35579?

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-2020-35579 published?

CVE-2020-35579 was published on 2020-12-20 and last updated on 2026-06-17.

CVE-2020-35579

CVE-2020-35579 is a high-severity vulnerability in Subconverter Project Subconverter with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Subconverter Project Subconverter
Published: 2020-12-20
Last modified: 2026-06-17

Description

tindy2013 subconverter 0.6.4 has a /sub?target=%TARGET%&url=%URL%&config=%CONFIG% API endpoint that accepts an arbitrary %URL% value and launches a GET request for it, but does not consider that the external request target may indirectly redirect back to this original /sub endpoint. Thus, a request loop and a denial of service may occur.

Frequently asked questions

What is CVE-2020-35579?: tindy2013 subconverter 0.6.4 has a /sub?target=%TARGET%&url=%URL%&config=%CONFIG% API endpoint that accepts an arbitrary %URL% value and launches a GET request for it, but does not consider that the external request target may indirectly redirect back to this original /sub endpoint. Thus, a request loop and a denial of service may occur.
How severe is CVE-2020-35579?: CVE-2020-35579 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-35579 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35579?: CVE-2020-35579 affects Subconverter Project Subconverter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35579?: 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-2020-35579 published?: CVE-2020-35579 was published on 2020-12-20 and last updated on 2026-06-17.

References

https://github.com/tindy2013/subconverter/issues/284

Affected products (1)

cpe:2.3:a:subconverter_project:subconverter:0.6.4:*:*:*:*:*:*:*

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