CVE-2026-16999

Local data disclosure via external XML entities

Published Aug 12, 2026 · Updated Aug 12, 2026

XXE in Republic of Türkiye Ministry of Justice UYAP Document Editor 4.5.17 through 5.4.16 allows attackers to disclose local data via crafted XML. Public records identify external entity processing as the flaw but do not name the parser, function, document format, or data-return path. Exploitation is local and requires user interaction with attacker-controlled content; the published vector reports confidentiality impact only.

CVSS severity6.3
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in Republic of Türkiye Ministry of Justice UYAP Document Editor 4.5.17 through 5.4.16 allows attackers to disclose local data via crafted XML. Public records identify external entity processing as the flaw but do not name the parser, function, document format, or data-return path. Exploitation is local and requires user interaction with attacker-controlled content; the published vector reports confidentiality impact only.

The record

CVE
CVE-2026-16999
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
Republic of Türkiye Ministry of Justice
Product
UYAP Document Editor
Classifications
CWE-611, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.5.17 <5.4.17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Republic of Türkiye Ministry of Justice · UYAP Document Editorversion=4.5.17 <5.4.17

Published CVSS scores

6.3Computer Emergency Response Team of the Republic of TurkeyCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1204.002Malicious File

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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