How severe is CVE-2026-3405?

CVE-2026-3405 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-3405 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3405?

CVE-2026-3405 affects Jeesite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3405?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-3405 have an EU (EUVD) identifier?

Yes. CVE-2026-3405 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9138.

When was CVE-2026-3405 published?

CVE-2026-3405 was published on 2026-03-02 and last updated on 2026-06-17.

CVE-2026-3405

CVE-2026-3405 is a low-severity vulnerability in Jeesite with a CVSS 3.x base score of 3.1. 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-22.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
CVSS v2: 2.1
CVSS v4: 1.3
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9138
Weakness: CWE-22
Affected product: Jeesite
Published: 2026-03-02
Last modified: 2026-06-17

Description

A vulnerability has been found in thinkgem JeeSite up to 5.15.1. The affected element is an unknown function of the component Connection Handler. The manipulation leads to path traversal. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is described as difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-3405?: A vulnerability has been found in thinkgem JeeSite up to 5.15.1. The affected element is an unknown function of the component Connection Handler. The manipulation leads to path traversal. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is described as difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-3405?: CVE-2026-3405 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-3405 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3405?: CVE-2026-3405 affects Jeesite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3405?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-3405 have an EU (EUVD) identifier?: Yes. CVE-2026-3405 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9138.
When was CVE-2026-3405 published?: CVE-2026-3405 was published on 2026-03-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jeesite:jeesite:*:*:*:*:*:*:*:*

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