CVE-2026-58400

criticalpriority · act · 90OT risk · criticalEU KEV · CNWEPSS 0.012 · 68 %ileNL
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
1.19% (68th) EPSS
CVSS 9.1 · critical
Is it mine?
2 products
Check your exposure
Who says so?
1 sources
ncsc_nl

EU KEVflagged by CNWreported 2026-09-02patched 2026-07-08

Remote Code Execution via unsafe Saxon XSLT processor configuration in formatter.

EPSS · scored 2026-10-24

GeoNetwork is a catalog application to manage spatially referenced resources. Prior to versions 4.4.12 and 4.2.17, the Saxon XSLT processor used to render formatters is configured without secure processing (`FEATURE_SECURE_PROCESSING`) and without disabling Java extension functions (`ALLOW_EXTERNAL_FUNCTIONS`). Any stylesheet loaded by GeoNetwork can therefore invoke `java.lang.Runtime.exec()` or `java.lang.ProcessBuilder` directly, achieving arbitrary command execution as the GeoNetwork process user. A user with sufficient privileges to upload a formatter can deliver a `.xsl` file containing Java extension call that execute arbitrary OS commands with the privileges of the GeoNetwork process. The issue is patched in GeoNetwork versions 4.4.12 and 4.2.17.

01

cvss

Technical severity, 0–10. One row per scoring source.

9.1
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Hsecondary · security-advisories@github.comexploitability 2.3 · impact 6
v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)
v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Hsecondary · NCSC-NL NL
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-470USCWE-470USCWE-94US
04

affected products (2)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • NCSC-2026-0343Kwetsbaarheden verholpen in GeoNetwork door OpenGeoNL2026-09-07csaf · ncsc_nlNL

    OpenGeo heeft meerdere kwetsbaarheden verholpen in GeoNetwork, een open-source catalogusapplicatie, specifiek in versies 4.4.5 tot en met 4.4.11 en versies voorafgaand aan 4.4.12 en 4.2.17.

06

sources

Which sources assert this record, and when.

ncsc_nlNVDCVE.orgMITRE
published 2026-09-03modified 2026-09-04
07

references (4) nvd

External citations — patches, advisories, analysis.

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