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Fencer Intel
high 8.8

CVE-2021-29641 json

Directus 8 before 8.8.2 allows remote authenticated users to execute arbitrary code because file-upload permissions include the ability to…

published 5y ago modified 4mo ago also EUVD-2021-16117

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.9%
EPSS 4.9% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

Directus 8 before 8.8.2 allows remote authenticated users to execute arbitrary code because file-upload permissions include the ability to upload a .php file to the main upload directory and/or upload a .php file and a .htaccess file to a subdirectory. Exploitation succeeds only for certain installations with the Apache HTTP Server and the local-storage driver (e.g., when the product was obtained from hub.docker.com).

Patch / fix

  • rangerstudio directus 8.8.2

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Exploit prediction

4.87% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • seclists.org http://seclists.org/fulldisclosure/2021/Apr/14 referenced PoC, tagged "exploit" by a source, unverified
  • sec-consult.com https://sec-consult.com/de/vulnerability-lab/advisory/arbitrary-file-upload-and-bypassing-htaccess-rules-in-monospace-directus-headless-cms/ referenced PoC, tagged "exploit" by a source, unverified
  • sec-consult.com https://sec-consult.com/vulnerability-lab/advisory/arbitrary-file-upload-and-bypassing-htaccess-rules-in-monospace-directus-headless-cms/ referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/162118/Monospace-Directus-Headless-CMS-File-Upload-Rule-Bypass.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

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.