CVE-2015-9544

Name: CVE-2015-9544
Creator: NVD / NIST
Published: 2020-04-07T18:15:13.18+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 1.33%

Last modified Jun 17, 2026

CVE-2015-9544 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. An issue was discovered in xdLocalStorage through 2.0.5. The receiveMessage() function in xdLocalStoragePostMessageApi.js does not implement any validation of the origin of web messages. EPSS estimates a 1.33% chance of exploitation in the next 30 days.

Description

An issue was discovered in xdLocalStorage through 2.0.5. The receiveMessage() function in xdLocalStoragePostMessageApi.js does not implement any validation of the origin of web messages. Remote attackers who can entice a user to load a malicious site can exploit this issue to impact the confidentiality and integrity of data in the local storage of the vulnerable site via malicious web messages.

Metrics

CVSS 3.1

7.1/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS Probability

1.33%

67.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cross Domain Local Storage Project	Cross Domain Local Storage	<= 2.0.5

References

https://github.com/ofirdagan/cross-domain-local-storageProduct, Third Party Advisory
https://github.com/ofirdagan/cross-domain-local-storage/issues/17Patch, Third Party Advisory
https://github.com/ofirdagan/cross-domain-local-storage/pull/19Patch, Third Party Advisory
https://grimhacker.com/exploiting-xdlocalstorage-localstorage-and-postmessage/#Missing-Origin-Magic-iframeExploit, Third Party Advisory
https://github.com/ofirdagan/cross-domain-local-storageProduct, Third Party Advisory
https://github.com/ofirdagan/cross-domain-local-storage/issues/17Patch, Third Party Advisory
https://github.com/ofirdagan/cross-domain-local-storage/pull/19Patch, Third Party Advisory
https://grimhacker.com/exploiting-xdlocalstorage-localstorage-and-postmessage/#Missing-Origin-Magic-iframeExploit, Third Party Advisory

Timeline

Published: Apr 7, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-9544?

How severe is CVE-2015-9544?

CVE-2015-9544 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 1.33% probability of exploitation in the next 30 days.

How do I fix CVE-2015-9544?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-9544?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST