CVE-2026-3405: A vulnerability has been found in thinkgem JeeSite up to 5.15.1

Q: How do I fix CVE-2026-3405?

jeesite: upgrade to newer than 5.15.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-3405 being exploited?

CVE-2026-3405 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-3405 affect?

CVE-2026-3405 affects jeesite. Severity is low (CVSS 3.1). 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

Q: How urgent is CVE-2026-3405?

Priority 23/100. No elevated risk signals yet.

Routine

LOW 3.1UPGRADE

CVE-2026-3405 is a low-severity flaw (CVSS 3.1) affecting jeesite. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	3.1 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-03-02
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: jeesite

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-02 02:16 UTCPublished CVE record published
2026-06-17 10:43 UTCUpdated Record last modified

jeesite jeesite UPGRADE

Affected: <= 5.15.1

Fixed in: newer than 5.15.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy jeesite || rpm -q jeesite || jeesite --version

2. UPGRADE to newer than 5.15.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade jeesite

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jeesite

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-3405?

jeesite: upgrade to newer than 5.15.1. Exact commands for each OS are on this page.

Is CVE-2026-3405 being exploited?

CVE-2026-3405 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-3405 affect?

CVE-2026-3405 affects jeesite. Severity is low (CVSS 3.1). 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

How urgent is CVE-2026-3405?

Priority 23/100. No elevated risk signals yet.

Related CVEs

CVE-2026-3404 MEDIUM 5.0 UPGRADE A flaw has been found in thinkgem JeeSite up to 5.15.1
CVE-2025-9796 LOW 3.5 UPGRADE A vulnerability was found in thinkgem JeeSite up to 5.12.1
CVE-2025-7865 LOW 3.5 UPGRADE A vulnerability was found in thinkgem JeeSite up to 5.12.0
CVE-2025-7864 MEDIUM 6.3 UPGRADE A vulnerability was found in thinkgem JeeSite up to 5.12.0
CVE-2025-7863 LOW 3.5 UPGRADE A vulnerability was found in thinkgem JeeSite up to 5.12.0 and classified as problematic

References

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