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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-22551

24
FAUCET Score

In Eclipse Theia versions prior to 1.71.0, the AI chat rendered Markdown image tags from AI responses, triggering HTTP requests to arbitrary external URLs without restriction. Combined with prompt injection in a malicious workspace, an attacker could induce the AI agent to construct image URLs encoding sensitive information from the workspace or conversation context, exfiltrating it to attacker-controlled servers. The workspace trust enforcement introduced in v1.71.0 mitigates the documented attack chain by disabling AI features in untrusted workspaces.

First published: Jun 18, 2026Last modified: Jun 18, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 1.71.0CPE matchmatch criteria
cpe:2.3:a:eclipse:theia:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.7MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/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:X/R:X/V:X/RE:X/U:X

Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
VS Confidentiality
HIGH
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.31%
Probability of exploitation in next 30 days
EPSS Percentile
23.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0031 is in the 24th percentile among its peer group of 26,236 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

npmpatch availablevia ghsa
Product: @theia/ai-chat-uiFixed in: 1.71.0
npmpatch availablevia ghsa
Product: @theia/ai-chatFixed in: 1.71.0
npmpatch availablevia ghsa
Product: @theia/ai-claude-codeFixed in: 1.71.0
npmpatch availablevia ghsa
Product: @theia/ai-code-completionFixed in: 1.71.0
npmpatch availablevia ghsa
Product: @theia/ai-coreFixed in: 1.71.0
npmpatch availablevia ghsa
Product: @theia/ai-editorFixed in: 1.71.0
npmpatch availablevia ghsa
Product: @theia/ai-ideFixed in: 1.71.0

Vendor Advisories (1)

npmGHSA-qwjm-9c66-w4q4medium

[Eclipse Theia] Data Exfiltration via Markdown Image Rendering in AI Chat

Jun 18, 2026

References

gitlab.eclipse.org / security/cve-assignment/-/work_items/115
PatchVendor Advisory