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CVE-2015-9544

19
FAUCET Score

CVE-2015-9544 is a cross-site scripting (XSS) vulnerability affecting xdLocalStorage through version 2.0.5, specifically within its xdLocalStoragePostMessageApi.js component. The flaw stems from a lack of origin validation in the receiveMessage() function, allowing remote attackers to inject malicious web messages. This vulnerability carries a high severity CVSS score of 7.1, indicating that an attacker could compromise the confidentiality and integrity of data stored in the local storage of affected websites, requiring user interaction to load a malicious site. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.0.5CPE matchmatch criteria
cpe:2.3:a:cross_domain_local_storage_project:cross_domain_local_storage:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.33%
Probability of exploitation in next 30 days
EPSS Percentile
68.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0133 is in the 66th percentile among its peer group of 11,617 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

npmGHSA-vrc7-6g8w-jh56high

Improper Input Validation in xdLocalStorage

Dec 9, 2021

References

github.com / ofirdagan/cross-domain-local-storage
ProductThird Party Advisory
github.com / ofirdagan/cross-domain-local-storage/issues/17
PatchThird Party Advisory
github.com / ofirdagan/cross-domain-local-storage/pull/19
PatchThird Party Advisory
grimhacker.com / exploiting-xdlocalstorage-localstorage-and-postmessage
ExploitThird Party Advisory