How severe is CVE-2023-22856?

CVE-2023-22856 has a CVSS 3.x base score of 8.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-22856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-22856?

CVE-2023-22856 affects Blogengine Blogengine.net. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-22856?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-22856 published?

CVE-2023-22856 was published on 2023-03-06 and last updated on 2026-06-17.

CVE-2023-22856

CVE-2023-22856 is a high-severity vulnerability in Blogengine Blogengine.net with a CVSS 3.x base score of 8.5. 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: High (CVSS 3.x base score 8.5)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Blogengine Blogengine.net
Published: 2023-03-06
Last modified: 2026-06-17

Description

A stored Cross-site Scripting (XSS) vulnerability in BlogEngine.NET 3.3.8.0, allows injection of arbitrary JavaScript in the security context of a blog visitor through an upload of a specially crafted file.

Frequently asked questions

What is CVE-2023-22856?: A stored Cross-site Scripting (XSS) vulnerability in BlogEngine.NET 3.3.8.0, allows injection of arbitrary JavaScript in the security context of a blog visitor through an upload of a specially crafted file.
How severe is CVE-2023-22856?: CVE-2023-22856 has a CVSS 3.x base score of 8.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-22856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-22856?: CVE-2023-22856 affects Blogengine Blogengine.net. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-22856?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-22856 published?: CVE-2023-22856 was published on 2023-03-06 and last updated on 2026-06-17.

References

https://www.themissinglink.com.au/security-advisories/cve-2023-22856

Affected products (1)

cpe:2.3:a:blogengine:blogengine.net:3.3.8.0:*:*:*:*:*:*:*

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