How severe is CVE-2021-3151?

CVE-2021-3151 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-2021-3151 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3151?

CVE-2021-3151 affects I-doit. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-3151?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-3151 published?

CVE-2021-3151 was published on 2021-02-27 and last updated on 2026-06-17.

CVE-2021-3151

CVE-2021-3151 is a medium-severity vulnerability in I-doit 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% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: I-doit
Published: 2021-02-27
Last modified: 2026-06-17

Description

i-doit before 1.16.0 is affected by Stored Cross-Site Scripting (XSS) issues that could allow remote authenticated attackers to inject arbitrary web script or HTML via C__MONITORING__CONFIG__TITLE, SM2__C__MONITORING__CONFIG__TITLE, C__MONITORING__CONFIG__PATH, SM2__C__MONITORING__CONFIG__PATH, C__MONITORING__CONFIG__ADDRESS, or SM2__C__MONITORING__CONFIG__ADDRESS.

Frequently asked questions

What is CVE-2021-3151?: i-doit before 1.16.0 is affected by Stored Cross-Site Scripting (XSS) issues that could allow remote authenticated attackers to inject arbitrary web script or HTML via C__MONITORING__CONFIG__TITLE, SM2__C__MONITORING__CONFIG__TITLE, C__MONITORING__CONFIG__PATH, SM2__C__MONITORING__CONFIG__PATH, C__MONITORING__CONFIG__ADDRESS, or SM2__C__MONITORING__CONFIG__ADDRESS.
How severe is CVE-2021-3151?: CVE-2021-3151 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-2021-3151 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3151?: CVE-2021-3151 affects I-doit. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3151?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-3151 published?: CVE-2021-3151 was published on 2021-02-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:i-doit:i-doit:*:*:*:*:*:*:*:*

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