Dashboard / CVE-2026-118492

CVE-2026-118492

LOW
INFO Priority: 0.00 BB Relevance: 29/100
Published: 2026-11-09 Modified: 2026-11-12 First seen: 2026-11-09 Status: active

Attack Surface

Low Complexity No Auth

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Passive
S: X
AT: Present
VC: None
VI: None
VA: None

Description

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
Eclipse Foundation Eclipse Langium 3.0.0
Eclipse Foundation Eclipse Langium 3.0.0

References & Advisories (3)

Bug Bounty Relevance

29 / 100
✓ No authentication
✓ Low complexity

CVSS Score

2.0 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.14%
Raw Score 0.001390
Percentile 3.3%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00139
2026-11-12
0.00139
2026-11-10
0.00139

Intelligence Sources

mitre ref →
nvd ref →

External Links