CVE-2020-11611Public exploitNetwork attack vector

Client message exposure via wildcard targetOrigin

Published Apr 7, 2020 · Updated Aug 4, 2024

Information exposure in xdLocalStorage 2.0.5 and earlier allows remote attackers to receive client messages through a redirected iframe. The buildMessage() function in xdLocalStorage.js passes a wildcard targetOrigin to iframe.postMessage(), delivering data regardless of the document's origin. Exploitation requires user interaction and control of a redirect that replaces the intended iframe document; exposure is limited to messages sent by the client, while valid request IDs also permit replies that the client processes.

CVSS severity6.1
Medium
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in xdLocalStorage 2.0.5 and earlier allows remote attackers to receive client messages through a redirected iframe. The buildMessage() function in xdLocalStorage.js passes a wildcard targetOrigin to iframe.postMessage(), delivering data regardless of the document's origin. Exploitation requires user interaction and control of a redirect that replaces the intended iframe document; exposure is limited to messages sent by the client, while valid request IDs also permit replies that the client processes.

The record

CVE
CVE-2020-11611
Published
Apr 7, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-601
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 7, 2020CVE 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

5.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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.

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 exploitPublished

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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