CVE-2016-15011

External entity resolution via unguarded XML parsing

Published Jan 6, 2023 · Updated Aug 6, 2024

XXE injection in e-Contract DSSP 1.3.0 through 1.3.1 allows attackers to resolve external entities through crafted SignResponse XML. The checkSignResponse method Base64-decodes the response and passes the resulting bytes to a JAXB unmarshaller without first prohibiting document-type declarations. Reachability requires a consuming application to supply attacker-influenced SignResponse data; published material does not specify which host resources can be read or contacted.

CVSS severity9.8
Critical
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE injection in e-Contract DSSP 1.3.0 through 1.3.1 allows attackers to resolve external entities through crafted SignResponse XML. The checkSignResponse method Base64-decodes the response and passes the resulting bytes to a JAXB unmarshaller without first prohibiting document-type declarations. Reachability requires a consuming application to supply attacker-influenced SignResponse data; published material does not specify which host resources can be read or contacted.

The record

CVE
CVE-2016-15011
Published
Jan 6, 2023
Updated
Aug 6, 2024
Vendor
e-Contract
Product
Digital Signature Service Protocol (DSSP)
Classifications
CWE-611
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record 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=1.3.0
  2. Affected versionversion=1.3.1

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

e-Contract · Digital Signature Service Protocol (DSSP)version=1.3.0; version=1.3.1

Published CVSS scores

5.5VulDBCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
9.8NISTCVSS: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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference

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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