How severe is CVE-2021-45843?

CVE-2021-45843 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-45843 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45843?

CVE-2021-45843 affects Glfusion. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45843?

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

When was CVE-2021-45843 published?

CVE-2021-45843 was published on 2022-09-29 and last updated on 2026-06-17.

CVE-2021-45843

CVE-2021-45843 is a medium-severity vulnerability in Glfusion with a CVSS 3.x base score of 6.1. 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 6.1)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Glfusion
Published: 2022-09-29
Last modified: 2026-06-17

Description

glFusion CMS v1.7.9 is affected by a reflected Cross Site Scripting (XSS) vulnerability. The value of the title request parameter is copied into the value of an HTML tag attribute which is encapsulated in double quotation marks. This input was echoed unmodified in the application's response.

Frequently asked questions

What is CVE-2021-45843?: glFusion CMS v1.7.9 is affected by a reflected Cross Site Scripting (XSS) vulnerability. The value of the title request parameter is copied into the value of an HTML tag attribute which is encapsulated in double quotation marks. This input was echoed unmodified in the application's response.
How severe is CVE-2021-45843?: CVE-2021-45843 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-45843 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45843?: CVE-2021-45843 affects Glfusion. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45843?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-45843 published?: CVE-2021-45843 was published on 2022-09-29 and last updated on 2026-06-17.

References

https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/glfusion/XSS-Reflected

Affected products (1)

cpe:2.3:a:glfusion:glfusion:1.7.9:*:*:*:*:*:*:*

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