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MEDIUM

CVE-2023-45556

CVSS v3

5.4

MEDIUM

EPSS Score

0.5 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • mybbBitnamiall versions · fixed in 1.8.37

Full record on NVD

Description

Cross Site Scripting vulnerability in Mybb Mybb Forums v.1.8.33 allows a local attacker to execute arbitrary code via the theme Name parameter in the theme management component.

Technical details

Published
2023-11-06

Frequently asked questions

What is CVE-2023-45556?

Cross Site Scripting vulnerability in Mybb Mybb Forums v.1.8.33 allows a local attacker to execute arbitrary code via the theme Name parameter in the theme management component.

Is CVE-2023-45556 actively exploited?

Active exploitation of CVE-2023-45556 has not been confirmed. Its EPSS score was 0.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-45556?

CVE-2023-45556 has a CVSS v3 base score of 5.4 (MEDIUM severity).

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