Insecure Permissions in Centreon Web versions 19.10.18, 20.04.8, and 20.10.2 allows remote attackers to bypass validation by changing any f…

published 2021-05-04 5y ago modified 2026-06-17 4mo ago also EUVD-2021-13591

cvss: 6.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits: 0; none known

Insecure Permissions in Centreon Web versions 19.10.18, 20.04.8, and 20.10.2 allows remote attackers to bypass validation by changing any file extension to ".gif", then uploading it in the "Administration/ Parameters/ Images" section of the application.

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Exploit prediction

1.19% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:N/I:P/A:N

Classification

Weakness

CWE-276 Incorrect Default Permissions

References

medium.com /%40pedro.ferreira.phf/vulnerability-affecting-some-versions-of-centreon-2b34bd6dc621

Sources

CVE List CVE-2021-26804
NVD CVE-2021-26804

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