CVE-2026-5802
CVE-2026-5802 is a high-severity vulnerability with a CVSS 3.x base score of 7.3. 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-77.
Key facts
- Severity: High (CVSS 3.x base score 7.3)
- CVSS v2: 7.5
- CVSS v4: 5.5
- EPSS exploit prediction: 2% (74th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-20623
- Weakness: CWE-77
- Published:
- Last modified:
Description
A vulnerability was identified in idachev mcp-javadc up to 1.2.4. Impacted is an unknown function of the component HTTP Interface. Such manipulation of the argument jarFilePath leads to os command injection. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.
Frequently asked questions
- What is CVE-2026-5802?
- A vulnerability was identified in idachev mcp-javadc up to 1.2.4. Impacted is an unknown function of the component HTTP Interface. Such manipulation of the argument jarFilePath leads to os command injection. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.
- How severe is CVE-2026-5802?
- CVE-2026-5802 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2026-5802 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-5802?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-5802 have an EU (EUVD) identifier?
- Yes. CVE-2026-5802 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20623.
- When was CVE-2026-5802 published?
- CVE-2026-5802 was published on 2026-04-08 and last updated on 2026-06-17.
References
- https://github.com/BruceJqs/public_exp/issues/2
- https://github.com/idachev/mcp-javadc/
- https://github.com/idachev/mcp-javadc/issues/7
- https://vuldb.com/submit/786974
- https://vuldb.com/vuln/356241
- https://vuldb.com/vuln/356241/cti
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