How severe is CVE-2026-33890?

CVE-2026-33890 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-2026-33890 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33890?

CVE-2026-33890 affects Franklioxygen Mytube. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33890?

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.

Does CVE-2026-33890 have an EU (EUVD) identifier?

Yes. CVE-2026-33890 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16519.

When was CVE-2026-33890 published?

CVE-2026-33890 was published on 2026-03-27 and last updated on 2026-06-17.

CVE-2026-33890

CVE-2026-33890 is a critical-severity vulnerability in Franklioxygen Mytube 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-284.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 8.9
EPSS exploit prediction: 0% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16519
Weakness: CWE-284
Affected product: Franklioxygen Mytube
Published: 2026-03-27
Last modified: 2026-06-17

Description

MyTube is a self-hosted downloader and player for several video websites Prior to version 1.8.71, an unauthenticated attacker can register an arbitrary passkey and subsequently authenticate with it to obtain a full admin session. The application exposes passkey registration endpoints without requiring prior authentication. Any successfully authenticated passkey is automatically granted an administrator token, allowing full administrative access to the application. This enables a complete compromise of the application without requiring any existing credentials. Version 1.8.71 fixes the issue.

Frequently asked questions

What is CVE-2026-33890?: MyTube is a self-hosted downloader and player for several video websites Prior to version 1.8.71, an unauthenticated attacker can register an arbitrary passkey and subsequently authenticate with it to obtain a full admin session. The application exposes passkey registration endpoints without requiring prior authentication. Any successfully authenticated passkey is automatically granted an administrator token, allowing full administrative access to the application. This enables a complete compromise of the application without requiring any existing credentials. Version 1.8.71 fixes the issue.
How severe is CVE-2026-33890?: CVE-2026-33890 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-2026-33890 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33890?: CVE-2026-33890 affects Franklioxygen Mytube. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33890?: 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.
Does CVE-2026-33890 have an EU (EUVD) identifier?: Yes. CVE-2026-33890 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16519.
When was CVE-2026-33890 published?: CVE-2026-33890 was published on 2026-03-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:franklioxygen:mytube:*:*:*:*:*:*:*:*

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CVE-2026-23837 — Critical (CVSS 9.8): MyTube is a self-hosted downloader and player for several video websites. A vulnerability present in version 1.7.65 and…
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