How severe is CVE-2015-9544?

CVE-2015-9544 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2015-9544 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-9544?

CVE-2015-9544 affects Cross Domain Local Storage Project Cross Domain Local Storage. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-9544?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-9544 published?

CVE-2015-9544 was published on 2020-04-07 and last updated on 2026-06-17.

CVE-2015-9544

CVE-2015-9544 is a high-severity vulnerability in Cross Domain Local Storage Project Cross Domain Local Storage with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v2: 5.8
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cross Domain Local Storage Project Cross Domain Local Storage
Published: 2020-04-07
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2015-9544?: 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.
How severe is CVE-2015-9544?: CVE-2015-9544 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2015-9544 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-9544?: CVE-2015-9544 affects Cross Domain Local Storage Project Cross Domain Local Storage. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-9544?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-9544 published?: CVE-2015-9544 was published on 2020-04-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cross_domain_local_storage_project:cross_domain_local_storage:*:*:*:*:*:*:*:*

More vulnerabilities in Cross Domain Local Storage Project Cross Domain Local Storage

CVE-2020-11610 — High (CVSS 8.8): An issue was discovered in xdLocalStorage through 2.0.5. The postData() function in xdLocalStoragePostMessageApi.js…
CVE-2015-9545 — High (CVSS 7.1): An issue was discovered in xdLocalStorage through 2.0.5. The receiveMessage() function in xdLocalStorage.js does not…
CVE-2020-11611 — Medium (CVSS 6.1): An issue was discovered in xdLocalStorage through 2.0.5. The buildMessage() function in xdLocalStorage.js specifies the…

All CVEs affecting Cross Domain Local Storage Project Cross Domain Local Storage →

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