LOWCVSS v4 2.0Vulnerability
CVE-2026-118492
In Eclipse Langium versions 3.0.0 and later, the langium-sprotty package does not HTML-escape diagnostic messages before rendering them in the default hover popup provided by `addHoverPopupHandler`. If a Langium grammar allows cross-reference text to contain HTML markup (such as through a STRING terminal), an unresolved cross-reference produces a diagnostic message that includes the literal ref text. When a Sprotty diagram is opened for a malicious source file under these conditions, and a user hovers over the corresponding error marker, attacker-controlled JavaScript can execute in the browser or webview.
Properties
- Severity
- LOW
- Nvd fetched at
- 2026-11-10T23:33:48.924589+00:00
- Epss score
- 0.00139
- Cvss severity
- LOW
- Cvss score
- 2
- Retrieved at
- 2026-11-10T23:35:17+00:00
- Last source
- FIRST EPSS
- Score
- 2
- Cvss version
- 4.0
- Cve id
- CVE-2026-118492
- Cvss vector
- CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:A/V:D/RE:X/U:X
- First seen by Signal
- 2026-11-09T19:15:57+00:00
- Name
- CVE-2026-118492
- Vector
- CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:A/V:D/RE:X/U:X
- Published at
- 2026-11-09T16:17:26.627
- Last modified
- 2026-11-09T16:17:26.627
- Epss percentile
- 0.03302
Related Entities (1)
HAS_WEAKNESS (1)
Related research
Explore deeper with Ninja Signal's threat intelligence graph