CVE-2025-64087Public exploitNetwork attack vector

Unauthenticated code execution via FreeMarker class instantiation

Published Jan 20, 2026 · Updated Jan 20, 2026

Server-side template injection in opensagres XDocReport 1.0.0 through 2.1.0 allows remote attackers to execute arbitrary code. FreemarkerTemplateEngine passes document template expressions to FreeMarker without restricting the ?new operator, allowing dangerous Java class instantiation. Exploitation requires a downstream application to process an attacker-controlled template, after which commands run with the host process privileges.

CVSS severity9.8
Critical
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side template injection in opensagres XDocReport 1.0.0 through 2.1.0 allows remote attackers to execute arbitrary code. FreemarkerTemplateEngine passes document template expressions to FreeMarker without restricting the ?new operator, allowing dangerous Java class instantiation. Exploitation requires a downstream application to process an attacker-controlled template, after which commands run with the host process privileges.

The record

CVE
CVE-2025-64087
Published
Jan 20, 2026
Updated
Jan 20, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1336, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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