CVE-2021-3816
CVE-2021-3816 is a medium-severity vulnerability in Cacti with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 5.4)
- CVSS v2: 3.5
- EPSS exploit prediction: 1% (41st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Cacti
- Published:
- Last modified:
Description
Cacti 1.1.38 allows authenticated users with User Management permissions to inject arbitrary HTML in the group_prefix field during the creation of a new group via "Copy" method at user_group_admin.php.
Frequently asked questions
- What is CVE-2021-3816?
- Cacti 1.1.38 allows authenticated users with User Management permissions to inject arbitrary HTML in the group_prefix field during the creation of a new group via "Copy" method at user_group_admin.php.
- How severe is CVE-2021-3816?
- CVE-2021-3816 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-3816 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-3816?
- CVE-2021-3816 affects Cacti. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-3816?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-3816 published?
- CVE-2021-3816 was published on 2022-01-19 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:cacti:cacti:1.1.38:*:*:*:*:*:*:*
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