In Eclipse Theia versions prior to 1.69.0, custom task definitions in workspace files (e.g. .theia/tasks.json, .vscode/tasks.json) could be executed without requiring workspace trust. An attacker could craft a malicious repository that, when cloned and opened in Theia, leads to execution of arbitrary commands with the user's privileges. In combination with AI chat features and a workspace .theia/settings.json that disabled tool confirmation, this could be triggered automatically by sending a message in the AI chat.
CVE-2026-44691
This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 86% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.8
- EG Score
- 8.8(medium)
- EPSS
- 13.9%
- KEV
- Not listed
Published
June 18, 2026
Last Modified
June 22, 2026
Advisory Details (1)
Auto-updated Jun 18, 2026[Eclipse Theia] Arbitrary Command Execution via Untrusted Workspace Task Definitions (#116) · Issues · Eclipse Projects Security / cve-assignment · GitLab
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/116Vendor Advisories for CVE-2026-44691(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(3 across 1 ecosystem)
npm(3)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| @theia/debug | — | 1.69.0 | — |
| @theia/task | — | 1.69.0 | — |
| @theia/workspace | — | 1.69.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 19× in last 7d / 55× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-07 02:56 UTCEG score recompute
- 2026-07-06 16:27 UTCEPSS rescore
- 2026-07-06 14:47 UTCEG score recompute
- 2026-07-06 02:32 UTCEG score recompute
- 2026-07-06 02:23 UTCEPSS rescore
- 2026-07-05 14:23 UTCEG score recompute
- 2026-07-05 02:30 UTCEPSS rescore
- 2026-07-05 02:13 UTCEG score recompute
- 2026-07-04 14:04 UTCEG score recompute
- 2026-07-04 06:31 UTCEPSS rescore
- 2026-07-04 01:46 UTCEG score recompute
- 2026-07-03 13:36 UTCEG score recompute
- 2026-07-03 01:28 UTCEG score recompute
- 2026-07-02 13:18 UTCEG score recompute
- 2026-07-02 01:09 UTCEG score recompute
- 2026-07-01 15:07 UTCEPSS rescore
- 2026-07-01 13:00 UTCEG score recompute
- 2026-07-01 00:52 UTCEG score recompute
- 2026-06-30 12:43 UTCEG score recompute
- 2026-06-30 00:28 UTCEG score recompute
- 2026-06-29 14:06 UTCEPSS rescore
- 2026-06-29 14:06 UTCEPSS rescore
- 2026-06-29 12:20 UTCEG score recompute
- 2026-06-29 00:11 UTCEG score recompute
- 2026-06-28 14:07 UTCEPSS rescore
Show 30 moreShow fewer
- 2026-06-28 12:02 UTCEG score recompute
- 2026-06-28 04:56 UTCEPSS rescore
- 2026-06-27 23:53 UTCEG score recompute
- 2026-06-27 11:44 UTCEG score recompute
- 2026-06-27 03:08 UTCEPSS rescore
- 2026-06-26 23:34 UTCEG score recompute
- 2026-06-26 11:25 UTCEG score recompute
- 2026-06-25 20:10 UTCEG score recompute
- 2026-06-25 13:49 UTCEPSS rescore
- 2026-06-25 13:49 UTCEPSS rescore
- 2026-06-25 08:01 UTCEG score recompute
- 2026-06-24 19:51 UTCEG score recompute
- 2026-06-24 14:05 UTCEPSS rescore
- 2026-06-24 07:42 UTCEG score recompute
- 2026-06-23 21:33 UTCEPSS rescore
- 2026-06-23 19:27 UTCEG score recompute
- 2026-06-23 07:18 UTCEG score recompute▲ 0.40
- 2026-06-22 21:36 UTCNVD updateCVSS v3 → 8.8
- 2026-06-22 19:05 UTCEG score recompute
- 2026-06-22 06:44 UTCEG score recompute
- 2026-06-21 18:31 UTCEG score recompute
- 2026-06-21 06:20 UTCEG score recompute
- 2026-06-20 18:09 UTCEG score recompute
- 2026-06-20 05:59 UTCEG score recompute
- 2026-06-19 17:49 UTCEG score recompute
- 2026-06-19 17:49 UTCGHSA enrichment
- 2026-06-19 05:37 UTCEG score recompute
- 2026-06-19 05:37 UTCGHSA enrichment
- 2026-06-18 17:26 UTCEG score recompute
- 2026-06-18 17:24 UTCNVD updatefirst tracked
Frequently asked(5)
What is CVE-2026-44691?
When was CVE-2026-44691 disclosed?
Is CVE-2026-44691 actively exploited?
What is the CVSS score of CVE-2026-44691?
How do I remediate CVE-2026-44691?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-44691
Is Your Infrastructure Affected by CVE-2026-44691?
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