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Fencer Intel
high 7.2

CVE-2020-11476 json

Unrestricted Uploads in Concrete5

published 6y ago modified 4mo ago also GHSA-hf9p-9r39-r2h3 , EUVD-2021-2356

cvss
7.2
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

Concrete5 before 8.5.3 allows Unrestricted Upload of File with Dangerous Type such as a .phar file.

Patch / fix

  • packagist concrete5/concrete5 8.5.3
  • concretecms concrete_cms 8.5.3

Is CVE-2020-11476 in your dependencies? 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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Exploit prediction

2.94% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • herolab.usd.de https://herolab.usd.de/security-advisories/usd-2020-0041/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C
GitHub 3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
packagist concrete5/concrete5
<8.5.3
8.5.3

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type

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.