CVE-2020-26705Network attack vector

Data disclosure or denial of service via XXE

Published Oct 31, 2021 · Updated Aug 4, 2024

XML external entity injection in Easy-XML 0.5.0 allows remote attackers to read sensitive data or interrupt service through crafted XML. The parseXML function accepts attacker-controlled external entities and resolves their referenced resources during XML parsing. Exploitation requires an application to pass attacker-controlled XML to parseXML; the public record does not specify whether denial of service causes a hang, crash, or other interruption.

CVSS severity9.1
Critical
EPSS probability1.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XML external entity injection in Easy-XML 0.5.0 allows remote attackers to read sensitive data or interrupt service through crafted XML. The parseXML function accepts attacker-controlled external entities and resolves their referenced resources during XML parsing. Exploitation requires an application to pass attacker-controlled XML to parseXML; the public record does not specify whether denial of service causes a hang, crash, or other interruption.

The record

CVE
CVE-2020-26705
Published
Oct 31, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-611
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 31, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

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

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
8.8GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:P

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

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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