How severe is CVE-2021-43692?

CVE-2021-43692 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-43692 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43692?

CVE-2021-43692 affects Youtube-php-mirroring Project Youtube-php-mirroring. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43692?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-43692 published?

CVE-2021-43692 was published on 2021-11-29 and last updated on 2026-06-17.

CVE-2021-43692

CVE-2021-43692 is a medium-severity vulnerability in Youtube-php-mirroring Project Youtube-php-mirroring with a CVSS 3.x base score of 6.1. 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: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Youtube-php-mirroring Project Youtube-php-mirroring
Published: 2021-11-29
Last modified: 2026-06-17

Description

youtube-php-mirroring (last update Jun 9, 2017) is affected by a Cross Site Scripting (XSS) vulnerability in file ytproxy/index.php.

Frequently asked questions

What is CVE-2021-43692?: youtube-php-mirroring (last update Jun 9, 2017) is affected by a Cross Site Scripting (XSS) vulnerability in file ytproxy/index.php.
How severe is CVE-2021-43692?: CVE-2021-43692 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-43692 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43692?: CVE-2021-43692 affects Youtube-php-mirroring Project Youtube-php-mirroring. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43692?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-43692 published?: CVE-2021-43692 was published on 2021-11-29 and last updated on 2026-06-17.

References

https://github.com/zxq2233/youtube-php-mirroring/issues/3

Affected products (1)

cpe:2.3:a:youtube-php-mirroring_project:youtube-php-mirroring:*:*:*:*:*:*:*:*

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