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Fencer Vulns
critical 9.8

CVE-2021-44663 json

A Remote Code Execution (RCE) vulnerability exists in the Xerte Project Xerte through 3.8.4 via a crafted php file through elfinder in conn…

published 2022-02-24 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-31483

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.0%
EPSS 4.0% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

A Remote Code Execution (RCE) vulnerability exists in the Xerte Project Xerte through 3.8.4 via a crafted php file through elfinder in connetor.php.

Patch / fix

Exploit prediction

3.99% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • riklutz.nl https://riklutz.nl/2021/10/30/unauthenticated-file-upload-to-remote-code-execution-in-xerte/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns 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.