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Description

A security flaw has been discovered in CesiumGS CesiumJS up to 1.137.0. Affected by this issue is some unknown functionality of the file Apps/Sandcastle/standalone.html. The manipulation of the argument c results in cross site scripting. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. The presence of this vulnerability remains uncertain at this time. The vendor was contacted early about this disclosure but did not respond in any way. According to CVE-2023-48094, "the vendor's position is that Apps/Sandcastle/standalone.html is part of the CesiumGS/cesium GitHub repository, but is demo code that is not part of the CesiumJS JavaScript library product."

PUBLISHED Reserved 2026-03-11 | Published 2026-03-12 | Updated 2026-03-12 | Assigner VulDB




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
MEDIUM: 4.3CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
5.0AV:N/AC:L/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR

Problem types

Cross Site Scripting

Code Injection

Product status

1.137
affected

Timeline

2026-03-11:Advisory disclosed
2026-03-11:VulDB entry created
2026-03-11:VulDB entry last update

Credits

Ana10gy (VulDB User) reporter

VulDB coordinator

References

vuldb.com/?id.350473 (VDB-350473 | CesiumGS CesiumJS standalone.html cross site scripting) vdb-entry technical-description

vuldb.com/?ctiid.350473 (VDB-350473 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.769630 (Submit #769630 | CesiumGS Cesium <=1.137.0 Cross-Site Scripting) third-party-advisory

github.com/AnalogyC0de/public_exp/issues/18 exploit issue-tracking

cve.org (CVE-2026-3990)

nvd.nist.gov (CVE-2026-3990)

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