How severe is CVE-2023-28873?

CVE-2023-28873 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-2023-28873 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28873?

CVE-2023-28873 affects Seafile. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28873?

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

When was CVE-2023-28873 published?

CVE-2023-28873 was published on 2023-12-09 and last updated on 2026-06-17.

CVE-2023-28873

CVE-2023-28873 is a medium-severity vulnerability in Seafile 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)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Seafile
Published: 2023-12-09
Last modified: 2026-06-17

Description

An XSS issue in wiki and discussion pages in Seafile 9.0.6 allows attackers to inject JavaScript into the Markdown editor.

Frequently asked questions

What is CVE-2023-28873?: An XSS issue in wiki and discussion pages in Seafile 9.0.6 allows attackers to inject JavaScript into the Markdown editor.
How severe is CVE-2023-28873?: CVE-2023-28873 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-2023-28873 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28873?: CVE-2023-28873 affects Seafile. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28873?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-28873 published?: CVE-2023-28873 was published on 2023-12-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:seafile:seafile:9.0.6:*:*:*:*:*:*:*

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