CVE-2026-3511Network attack vector

File disclosure and SSRF via incomplete XXE defenses

Published Mar 19, 2026 · Updated Mar 19, 2026

XXE in XMLUtils.java in Slovensko.Digital Autogram before 2.7.2 allows remote attackers to read local files through /sign. The document builder disables general external entities but leaves parameter entities and external DTD resolution enabled, so crafted XML can dereference local or network resources. Exploitation requires a victim to visit a malicious website that submits the XML to Autogram's localhost HTTP server and requires the attacker to know the target file path.

CVSS severity8.6
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in XMLUtils.java in Slovensko.Digital Autogram before 2.7.2 allows remote attackers to read local files through /sign. The document builder disables general external entities but leaves parameter entities and external DTD resolution enabled, so crafted XML can dereference local or network resources. Exploitation requires a victim to visit a malicious website that submits the XML to Autogram's localhost HTTP server and requires the attacker to know the target file path.

The record

CVE
CVE-2026-3511
Published
Mar 19, 2026
Updated
Mar 19, 2026
Vendor
Slovensko.Digital
Product
Autogram
Classifications
CWE-611, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 19, 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=0 <2.7.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Slovensko.Digital · Autogramversion=0 <2.7.2

Published CVSS scores

8.6National Cyber Security Centre SK-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1005Data from Local System

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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