How severe is CVE-2023-27890?

CVE-2023-27890 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-2023-27890 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-27890?

CVE-2023-27890 affects Export User Project Export User. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-27890?

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

When was CVE-2023-27890 published?

CVE-2023-27890 was published on 2023-04-14 and last updated on 2026-06-17.

CVE-2023-27890

CVE-2023-27890 is a medium-severity vulnerability in Export User Project Export User 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: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Export User Project Export User
Published: 2023-04-14
Last modified: 2026-06-17

Description

The Export User plugin through 2.0 for MyBB allows XSS during the process of an admin generating DSGVO data for a user, via the Custom User Title, Location, or Bio field. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

Frequently asked questions

What is CVE-2023-27890?: The Export User plugin through 2.0 for MyBB allows XSS during the process of an admin generating DSGVO data for a user, via the Custom User Title, Location, or Bio field. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
How severe is CVE-2023-27890?: CVE-2023-27890 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-2023-27890 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-27890?: CVE-2023-27890 affects Export User Project Export User. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-27890?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-27890 published?: CVE-2023-27890 was published on 2023-04-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:export_user_project:export_user:*:*:*:*:*:mybb:*:*

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