CVE-2025-14896Network attack vector

Unauthenticated file disclosure via unchecked Vega URLs

Published Dec 18, 2025 · Updated Dec 18, 2025

Information disclosure in Yuzu tech Kroki allows remote attackers to read server files through crafted Vega diagram specifications. In vega/src/convert.js, convert() checked only array-form spec.data URL entries in secure mode, then passed object-form data.url and nested marks[].data[].url values to Vega for loading. The unauthenticated /vega rendering endpoint can return file contents in the generated diagram, while the same URL handling can reach arbitrary network locations.

CVSS severity8.7
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Yuzu tech Kroki allows remote attackers to read server files through crafted Vega diagram specifications. In vega/src/convert.js, convert() checked only array-form spec.data URL entries in secure mode, then passed object-form data.url and nested marks[].data[].url values to Vega for loading. The unauthenticated /vega rendering endpoint can return file contents in the generated diagram, while the same URL handling can reach arbitrary network locations.

The record

CVE
CVE-2025-14896
Published
Dec 18, 2025
Updated
Dec 18, 2025
Vendor
Yuzu Tech
Product
Kroki
Classifications
CWE-552, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0 <*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Yuzu Tech · Krokiversion=0 <*

Published CVSS scores

8.7SnykCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5SnykCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-552Files or Directories Accessible to External Parties
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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