CVE-2024-21623

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 1.2%, top 34% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
65.7%
KEV
Not listed

Published

January 2, 2024

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Jun 1, 2026
Patch available. Sources: github_commit, github.
generic

Redirecting…

https://securitylab.github.com/research/github-actions-untrusted-input/
generic

Redirecting…

https://securitylab.github.com/research/github-actions-preventing-pwn-requests/
github Patch Available

Arbitrary Expression Injection in github workflow leads to Command execution & leaking secrets · Advisory · opentibiabr/otclient · GitHub

https://github.com/mehah/otclient/security/advisories/GHSA-q6gr-wc79-v589
github_commit Patch Available

commit db560de0b564 (mehah/otclient)

Patch available: mehah/otclient 3.5 (contains commit db560de0b564)

https://github.com/mehah/otclient/commit/db560de0b56476c87a2f967466407939196dd254
generic

otclient/.github/workflows/analysis-sonarcloud.yml at 72744edc3b9913b920e0fd12e929604f682fda75 · opentibiabr/otclient · GitHub

https://github.com/mehah/otclient/blob/72744edc3b9913b920e0fd12e929604f682fda75/.github/workflows/analysis-sonarcloud.yml#L91-L104

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 107 total refreshes for this CVE.

  1. 2026-07-23 14:17 UTCEPSS rescore
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  3. 2026-07-23 02:33 UTCEG score recompute
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  49. 2026-06-09 10:56 UTCOSV refresh
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Frequently asked(5)

What is CVE-2024-21623?
CVE-2024-21623 is a critical vulnerability published on January 2, 2024. 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…
When was CVE-2024-21623 disclosed?
CVE-2024-21623 was first published in the National Vulnerability Database on January 2, 2024, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-21623 actively exploited?
CVE-2024-21623 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 65.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-21623?
CVE-2024-21623 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2024-21623?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-21623, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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