CVE-2023-27890: The Export User plugin through 2.0 for MyBB allows XSS during the process of an admin generating DSGVO data fo

Q: How do I fix CVE-2023-27890?

export user: upgrade to newer than 2.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-27890 being exploited?

CVE-2023-27890 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-27890 affect?

CVE-2023-27890 affects export user. Severity is medium (CVSS 5.4). 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 sup

Q: How urgent is CVE-2023-27890?

Priority 32/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2023-27890 is a medium-severity flaw (CVSS 5.4) affecting export user. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-04-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: export user project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-04-14 01:15 UTCPublished CVE record published
2026-06-17 05:46 UTCUpdated Record last modified

export user project export user UPGRADE

Affected: <= 2.0

Fixed in: newer than 2.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy export-user || rpm -q export-user || export-user --version

2. UPGRADE to newer than 2.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade export-user

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade export-user

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-27890?

export user: upgrade to newer than 2.0. Exact commands for each OS are on this page.

Is CVE-2023-27890 being exploited?

CVE-2023-27890 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-27890 affect?

CVE-2023-27890 affects export user. Severity is medium (CVSS 5.4). 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 sup

How urgent is CVE-2023-27890?

Priority 32/100. No elevated risk signals yet.

References

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