How severe is CVE-2021-45255?

CVE-2021-45255 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-45255 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45255?

CVE-2021-45255 affects Video Sharing Website Project Video Sharing Website. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45255?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-45255 published?

CVE-2021-45255 was published on 2021-12-21 and last updated on 2026-06-17.

CVE-2021-45255

CVE-2021-45255 is a critical-severity vulnerability in Video Sharing Website Project Video Sharing Website with a CVSS 3.x base score of 9.8. 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-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Video Sharing Website Project Video Sharing Website
Published: 2021-12-21
Last modified: 2026-06-17

Description

The email parameter from ajax.php of Video Sharing Website 1.0 appears to be vulnerable to SQL injection attacks. A payload injects a SQL sub-query that calls MySQL's load_file function with a UNC file path that references a URL on an external domain. The application interacted with that domain, indicating that the injected SQL query was executed.

Frequently asked questions

What is CVE-2021-45255?: The email parameter from ajax.php of Video Sharing Website 1.0 appears to be vulnerable to SQL injection attacks. A payload injects a SQL sub-query that calls MySQL's load_file function with a UNC file path that references a URL on an external domain. The application interacted with that domain, indicating that the injected SQL query was executed.
How severe is CVE-2021-45255?: CVE-2021-45255 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-45255 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45255?: CVE-2021-45255 affects Video Sharing Website Project Video Sharing Website. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45255?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-45255 published?: CVE-2021-45255 was published on 2021-12-21 and last updated on 2026-06-17.

References

https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/oretnom23/Video-Sharing-Website

Affected products (1)

cpe:2.3:a:video_sharing_website_project:video_sharing_website:1.0:*:*:*:*:*:*:*

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