How severe is CVE-2024-21623?

CVE-2024-21623 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-21623 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21623?

CVE-2024-21623 affects Mehah Otclient. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21623?

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

Does CVE-2024-21623 have an EU (EUVD) identifier?

Yes. CVE-2024-21623 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19270.

When was CVE-2024-21623 published?

CVE-2024-21623 was published on 2024-01-02 and last updated on 2026-06-17.

CVE-2024-21623

CVE-2024-21623 is a critical-severity vulnerability in Mehah Otclient with a CVSS 3.x base score of 9.8. 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-74.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-19270
Weakness: CWE-74
Affected product: Mehah Otclient
Published: 2024-01-02
Last modified: 2026-06-17

Description

OTCLient is an alternative tibia client for otserv. Prior to commit db560de0b56476c87a2f967466407939196dd254, the /mehah/otclient "`Analysis - SonarCloud`" workflow is vulnerable to an expression injection in Actions, allowing an attacker to run commands remotely on the runner, leak secrets, and alter the repository using this workflow. Commit db560de0b56476c87a2f967466407939196dd254 contains a fix for this issue.

Frequently asked questions

What is CVE-2024-21623?: OTCLient is an alternative tibia client for otserv. Prior to commit db560de0b56476c87a2f967466407939196dd254, the /mehah/otclient "`Analysis - SonarCloud`" workflow is vulnerable to an expression injection in Actions, allowing an attacker to run commands remotely on the runner, leak secrets, and alter the repository using this workflow. Commit db560de0b56476c87a2f967466407939196dd254 contains a fix for this issue.
How severe is CVE-2024-21623?: CVE-2024-21623 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-21623 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21623?: CVE-2024-21623 affects Mehah Otclient. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21623?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-21623 have an EU (EUVD) identifier?: Yes. CVE-2024-21623 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19270.
When was CVE-2024-21623 published?: CVE-2024-21623 was published on 2024-01-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mehah:otclient:*:*:*:*:*:*:*:*

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