CVE-2026-3404HIGH 8.1EPSS p26.7%

CVE-2026-3404CVE-2026-3404

Description

A flaw has been found in thinkgem JeeSite up to 5.15.1. Impacted is an unknown function of the file /com/jeesite/common/shiro/cas/CasOutHandler.java of the component Endpoint. Executing a manipulation can lead to xml external entity reference. The attack may be performed from remote. Attacks of this nature are highly complex. The exploitability is considered difficult. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Scoring

CVSS 3.18.1 (HIGH)
VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.35% probability of exploitation · percentile 26.7% · 2026-06-19T12:03:05Z
Published2026-03-02
Last modified2026-04-29

Underlying weaknesses· 2

CWE-610CWE-611

References

  1. https://vuldb.com/?ctiid.348299
  2. https://vuldb.com/?id.348299
  3. https://vuldb.com/?submit.763732
  4. https://www.yuque.com/la12138/pa2fpb/ew8x2qss8dv0bsu0?singleDoc

2

TypeTargetConfidenceTier
WeaknessExternally Controlled Reference to a Resource in Another Spherecwe-6100%live
WeaknessImproper Restriction of XML External Entity Referencecwe-6110%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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CVE-2026-3405
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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.