CVE-2021-3273 json
Nagios XI below 5.7 is affected by code injection in the /nagiosxi/admin/graphtemplates.php component.
published 2021-02-25 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26611
- cvss
- 7.2
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 7.2%
- EPSS 7.2% chance of exploitation in 30 days, percentile 94%
- public exploits
- 0
- none known
Summary
Nagios XI below 5.7 is affected by code injection in the /nagiosxi/admin/graphtemplates.php component. To exploit this vulnerability, someone must have an admin user account in Nagios XI's web system.
Patch / fix
- nagios nagios_xi 5.7
Exploit prediction
7.21% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- gist.github.com https://gist.github.com/leommxj/93edce6f8572cefe79a3d7da4389374e 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 |
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
References
-
gist.github.com
/leommxj/93edce6f8572cefe79a3d7da4389374e
exploit, third-party-advisory
-
nagios.com
/downloads/nagios-xi/change-log/
release-notes, vendor-advisory
Sources
- CVE List CVE-2021-3273
- NVD CVE-2021-3273
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.