How severe is CVE-2021-30057?

CVE-2021-30057 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-30057 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30057?

CVE-2021-30057 affects Eng Knowage. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30057?

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

When was CVE-2021-30057 published?

CVE-2021-30057 was published on 2021-04-05 and last updated on 2026-06-17.

CVE-2021-30057

CVE-2021-30057 is a medium-severity vulnerability in Eng Knowage with a CVSS 3.x base score of 4.8. 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-74.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Eng Knowage
Published: 2021-04-05
Last modified: 2026-06-17

Description

A stored HTML injection vulnerability exists in Knowage Suite version 7.1. An attacker can inject arbitrary HTML in "/restful-services/2.0/analyticalDrivers" via the 'LABEL' and 'NAME' parameters.

Frequently asked questions

What is CVE-2021-30057?: A stored HTML injection vulnerability exists in Knowage Suite version 7.1. An attacker can inject arbitrary HTML in "/restful-services/2.0/analyticalDrivers" via the 'LABEL' and 'NAME' parameters.
How severe is CVE-2021-30057?: CVE-2021-30057 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-30057 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30057?: CVE-2021-30057 affects Eng Knowage. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30057?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-30057 published?: CVE-2021-30057 was published on 2021-04-05 and last updated on 2026-06-17.

References

https://github.com/piuppi/Proof-of-Concepts/blob/main/Engineering/HTLM-Injection-KnowageSuite.md

Affected products (1)

cpe:2.3:a:eng:knowage:*:*:*:*:*:*:*:*

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