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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-44688

31
FAUCET Score

In Eclipse Theia versions prior to 1.71.0, the AI chat agent processed workspace file and directory names as part of its prompt context without distinguishing them from system instructions. An attacker could craft a malicious repository with adversarial directory or file names that, when analyzed by the AI agent, would cause the agent to follow attacker-controlled instructions (indirect prompt injection). Combined with other AI chat features available in untrusted workspaces, this enabled attack chains leading to data exfiltration via Markdown image rendering or arbitrary command execution via task definitions.

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

8.4HIGH

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/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
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.51%
Probability of exploitation in next 30 days
EPSS Percentile
40.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0051 is in the 42nd percentile among its peer group of 14,855 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 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 0.1 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-3jww-hxqj-wfq2high

[Eclipse Theia] Indirect Prompt Injection via Adversarial Workspace File and Directory Names in AI Chat

Jun 18, 2026

References

gitlab.eclipse.org / security/cve-assignment/-/work_items/113
Vendor AdvisoryPatch