CVE-2026-19884

HIGHPre-NVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 97% 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).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 4 sources updated this week
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In Eclipse Theia versions up to and including 1.69.0, opening a folder starts source control integration without requiring the user to trust the folder first. This affects applications built on Theia that include the git integration, such as the Theia IDE. Both Theia's own @theia/git extension and the builtin VS Code git extension run git commands such as git status as soon as a repository is detected. Since git honors repository-local configuration, a folder containing an attacker-controlled .git/config with core.fsmonitor (or a comparable hook-like setting) causes the configured command to be executed. The configuration can be delivered by burying a bare repository inside a regular repository (OVE-20210718-0001), so cloning an attacker-supplied repository and opening it in a Theia-based application is sufficient to execute arbitrary commands with the privileges of the user, without any confirmation prompt.

As of 1.70.0, plugins that declare capabilities.untrustedWorkspaces.supported: false, which includes the builtin git extension, are no longer loaded or activated in an untrusted workspace, and the deprecated @theia/git extension has been removed, so no git command is executed against an untrusted folder.

CVSS v3
8.4
EG Score
8.4(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity84% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 14, 2026

Last Modified

August 18, 2026

Advisory Details (5)

Auto-updated Aug 14, 2026
Patch available. Sources: github_pr.
generic

[Eclipse Theia] Arbitrary code execution via untrusted git repository configuration (#231) · Issues · Eclipse Projects Security / cve-assignment · GitLab

https://gitlab.eclipse.org/security/cve-assignment/-/work_items/231
generic

[Eclipse Theia] Git local configuration leading to Arbitrary Code Execution in Theia IDE upon opening attacker's repo/folder (#175) · Issues · Eclipse Projects Security / vulnerability-reports · GitLab

https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/175
github_pr Patch Available

chore: remove deprecated @theia/git extension code

Patch available: eclipse-theia/theia v1.70.0 (PR #17148 merged 2026-03-11)

https://github.com/eclipse-theia/theia/pull/17148
github_pr Patch Available

feat: enforce workspace trust in extension/plugin system

Patch available: eclipse-theia/theia v1.70.0 (PR #17098 merged 2026-03-17)

https://github.com/eclipse-theia/theia/pull/17098
github_pr Patch Available

feat(workspace): implement workspace trust dialog and management

Patch available: eclipse-theia/theia v1.68.0 (PR #16809 merged 2026-01-23)

https://github.com/eclipse-theia/theia/pull/16809

Vendor Advisories for CVE-2026-19884(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 37× in last 7d / 37× 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.

  1. 2026-08-20 16:16 UTCGHSA enrichment
  2. 2026-08-20 04:06 UTCEG score recompute
  3. 2026-08-20 04:06 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-19 15:57 UTCGHSA enrichment
  6. 2026-08-19 03:40 UTCGHSA enrichment
  7. 2026-08-18 15:29 UTCGHSA enrichment
  8. 2026-08-18 14:58 UTCEG score recompute
  9. 2026-08-18 14:58 UTCGHSA enrichment
  10. 2026-08-18 13:48 UTCEPSS rescore
  11. 2026-08-18 01:38 UTCEG score recompute
  12. 2026-08-18 01:38 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 13:29 UTCEG score recompute
  15. 2026-08-17 13:29 UTCGHSA enrichment
  16. 2026-08-17 12:38 UTCEG score recompute
  17. 2026-08-17 12:38 UTCGHSA enrichment
  18. 2026-08-17 04:57 UTCGHSA enrichment
  19. 2026-08-16 16:47 UTCEG score recompute
  20. 2026-08-16 16:47 UTCGHSA enrichment
  21. 2026-08-16 14:56 UTCEPSS rescore
  22. 2026-08-16 04:38 UTCEG score recompute
  23. 2026-08-16 04:38 UTCGHSA enrichment
  24. 2026-08-16 02:14 UTCEPSS rescore
  25. 2026-08-15 16:29 UTCEG score recompute
Show 12 more
  1. 2026-08-15 16:29 UTCGHSA enrichment
  2. 2026-08-15 04:19 UTCEG score recompute
  3. 2026-08-15 04:19 UTCGHSA enrichment
  4. 2026-08-15 04:13 UTCEG score recompute
  5. 2026-08-15 04:13 UTCGHSA enrichment
  6. 2026-08-14 20:18 UTCEG score recompute
  7. 2026-08-14 20:18 UTCGHSA enrichment
  8. 2026-08-14 19:54 UTCEG score recompute
  9. 2026-08-14 19:54 UTCGHSA enrichment
  10. 2026-08-14 16:31 UTCEG score recompute
  11. 2026-08-14 15:39 UTCEG score recompute
  12. 2026-08-14 15:38 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-19884?
CVE-2026-19884 is a high vulnerability published on August 14, 2026. In Eclipse Theia versions up to and including 1.69.0, opening a folder starts source control integration without requiring the user to trust the folder first. This affects applications built on Theia that include the git integration, such as the Theia IDE. Both Theia's own @theia/git extension and…
When was CVE-2026-19884 disclosed?
CVE-2026-19884 was first published in the National Vulnerability Database on August 14, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19884 actively exploited?
CVE-2026-19884 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.9% of all scored CVEs.
What is the CVSS score of CVE-2026-19884?
CVE-2026-19884 has a CVSS v3 base score of 8.4 (NVD).
How do I remediate CVE-2026-19884?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19884, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-19884

Explore →

Is Your Infrastructure Affected by CVE-2026-19884?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs