CVE-2021-43032
CVE-2021-43032 is a medium-severity vulnerability in Xenforo 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-79.
Key facts
- Severity: Medium (CVSS 3.x base score 4.8)
- CVSS v2: 3.5
- EPSS exploit prediction: 1% (55th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Xenforo
- Published:
- Last modified:
Description
In XenForo through 2.2.7, a threat actor with access to the admin panel can create a new Advertisement via the Advertising function, and save an XSS payload in the body of the HTML document. This payload will execute globally on the client side.
Frequently asked questions
- What is CVE-2021-43032?
- In XenForo through 2.2.7, a threat actor with access to the admin panel can create a new Advertisement via the Advertising function, and save an XSS payload in the body of the HTML document. This payload will execute globally on the client side.
- How severe is CVE-2021-43032?
- CVE-2021-43032 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-2021-43032 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-43032?
- CVE-2021-43032 affects Xenforo. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-43032?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-43032 published?
- CVE-2021-43032 was published on 2021-11-03 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:xenforo:xenforo:*:*:*:*:*:*:*:*
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