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Fencer Intel
medium 5.3

CVE-2026-78051 json

alexta69 MeTube Cookie File cookies.txt file access

published 4mo ago modified 30d ago also EUVD-2026-64608 , GHSA-hj5g-p3v4-3cw5

Unreviewed: the maintainers' own advisory

Published by the maintainers on their GitHub repository alexta69/metube. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

A vulnerability was determined in alexta69 MeTube up to 2026.06.10. The impacted element is an unknown function of the file /download/.metube/cookies.txt of the component Cookie File Handler. This manipulation causes files or directories accessible. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version 2026.06.20 is sufficient to resolve this issue. Patch name: ce897ee00903bf7ded406f0d7852d95dd4164add. You should upgrade the affected component.

Patch / fix

  • alexta69 MeTube 2026.06.20

Is CVE-2026-78051 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
2mo ago

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • github.com https://github.com/alexta69/metube/security/advisories/GHSA-hj5g-p3v4-3cw5 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
CNA 3.0 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
CNA 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N/E:POC/RL:OF/RC:C
CNA 4.0 5.5 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • alexta69 MeTube

Classification

Weakness
  • CWE-552 Files or Directories Accessible to External Parties
  • CWE-425 Direct Request

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

The maintainers of alexta69/metube published their own advisory on GitHub. Reviewed sources take precedence over it.