CVE-2026-60009

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: 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 1.73.1, the @theia/filesystem backend binds POST /file-upload in every filesystem-enabled deployment. The handler takes an attacker-supplied absolute path from the multipart uri field and calls fs.move(tmp, target, { overwrite: true }) with no workspace confinement and no authentication. In browser (non-Electron) deployments the connection token is enforced only on WebSocket upgrades; the HTTP middleware in @theia/core re-issues the cookie and calls next() without rejecting tokenless HTTP requests. Because multipart/form-data is a CORS-safelisted request type, a cross-origin web page can trigger the write with no preflight and no credentials, resulting in an unauthenticated arbitrary file write outside the workspace to any absolute path the backend process can write. This can escalate to remote code execution, for example by overwriting a startup-executed file such as ~/.bashrc. Electron mode uses a separate ElectronSecurityToken and is not affected via this path.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 7, 2026

Advisory Details (2)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

[Eclipse Theia] unauthenticated cross-origin arbitrary file write, escalate to RCE (#177) · Issues · Eclipse Projects Security / cve-assignment · GitLab

https://gitlab.eclipse.org/security/cve-assignment/-/work_items/177
generic

[Eclipse Theia] unauthenticated cross-origin arbitrary file write, escalate to RCE (#595) · Issues · Eclipse Projects Security / vulnerability-reports · GitLab

https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/595

Vendor Advisories for CVE-2026-60009(1)

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

Weakness Classification(4)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 100× 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.

Showing the most recent 100 of 164 total refreshes for this CVE.

  1. 2026-09-19 07:49 UTCEG score recompute
  2. 2026-09-19 07:49 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 17:44 UTCGHSA enrichment
  5. 2026-09-18 03:50 UTCEG score recompute
  6. 2026-09-18 03:50 UTCGHSA enrichment
  7. 2026-09-17 19:31 UTCEPSS rescore
  8. 2026-09-17 15:57 UTCGHSA enrichment
  9. 2026-09-17 01:07 UTCEG score recompute
  10. 2026-09-17 01:07 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-16 05:14 UTCGHSA enrichment
  14. 2026-09-15 16:24 UTCEG score recompute
  15. 2026-09-15 16:24 UTCGHSA enrichment
  16. 2026-09-15 03:11 UTCEPSS rescore
  17. 2026-09-15 01:30 UTCGHSA enrichment
  18. 2026-09-14 07:22 UTCGHSA enrichment
  19. 2026-09-13 19:30 UTCEG score recompute
  20. 2026-09-13 19:30 UTCGHSA enrichment
  21. 2026-09-13 16:47 UTCEPSS rescore
  22. 2026-09-13 06:57 UTCGHSA enrichment
  23. 2026-09-12 19:02 UTCEG score recompute
  24. 2026-09-12 19:02 UTCGHSA enrichment
  25. 2026-09-12 07:09 UTCGHSA enrichment
Show 75 more
  1. 2026-09-11 19:17 UTCEG score recompute
  2. 2026-09-11 19:17 UTCGHSA enrichment
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-11 06:57 UTCGHSA enrichment
  5. 2026-09-10 19:05 UTCEG score recompute
  6. 2026-09-10 19:04 UTCGHSA enrichment
  7. 2026-09-10 09:35 UTCEPSS rescore
  8. 2026-09-10 07:10 UTCGHSA enrichment
  9. 2026-09-09 19:17 UTCGHSA enrichment
  10. 2026-09-09 06:25 UTCEG score recompute
  11. 2026-09-09 06:25 UTCGHSA enrichment
  12. 2026-09-08 22:01 UTCEPSS rescore
  13. 2026-09-08 08:01 UTCGHSA enrichment
  14. 2026-09-07 18:19 UTCEG score recompute
  15. 2026-09-07 18:19 UTCGHSA enrichment
  16. 2026-09-07 16:01 UTCEPSS rescore
  17. 2026-09-06 18:17 UTCEG score recompute
  18. 2026-09-06 18:17 UTCGHSA enrichment
  19. 2026-09-06 13:47 UTCEPSS rescore
  20. 2026-09-06 06:24 UTCGHSA enrichment
  21. 2026-09-05 18:27 UTCEG score recompute
  22. 2026-09-05 18:27 UTCGHSA enrichment
  23. 2026-09-05 03:51 UTCEG score recompute
  24. 2026-09-05 03:51 UTCGHSA enrichment
  25. 2026-09-04 09:36 UTCEG score recompute
  26. 2026-09-04 09:36 UTCGHSA enrichment
  27. 2026-09-04 05:07 UTCEPSS rescore
  28. 2026-09-03 19:17 UTCGHSA enrichment
  29. 2026-09-03 07:01 UTCEG score recompute
  30. 2026-09-03 07:01 UTCGHSA enrichment
  31. 2026-09-02 14:12 UTCEPSS rescore
  32. 2026-09-02 08:38 UTCGHSA enrichment
  33. 2026-09-01 20:40 UTCEG score recompute
  34. 2026-09-01 20:39 UTCGHSA enrichment
  35. 2026-09-01 13:54 UTCEPSS rescore
  36. 2026-09-01 04:40 UTCEPSS rescore
  37. 2026-08-31 22:51 UTCGHSA enrichment
  38. 2026-08-30 21:49 UTCEG score recompute
  39. 2026-08-30 21:49 UTCGHSA enrichment
  40. 2026-08-30 19:17 UTCEPSS rescore
  41. 2026-08-30 09:56 UTCEG score recompute
  42. 2026-08-30 09:56 UTCGHSA enrichment
  43. 2026-08-30 01:22 UTCEPSS rescore
  44. 2026-08-29 21:28 UTCEG score recompute
  45. 2026-08-29 21:27 UTCGHSA enrichment
  46. 2026-08-28 21:42 UTCEPSS rescore
  47. 2026-08-28 00:55 UTCEG score recompute
  48. 2026-08-28 00:55 UTCGHSA enrichment
  49. 2026-08-27 14:25 UTCEPSS rescore
  50. 2026-08-27 12:42 UTCGHSA enrichment
  51. 2026-08-27 00:49 UTCEG score recompute
  52. 2026-08-27 00:49 UTCGHSA enrichment
  53. 2026-08-26 14:46 UTCEPSS rescore
  54. 2026-08-26 12:56 UTCGHSA enrichment
  55. 2026-08-26 01:04 UTCEG score recompute
  56. 2026-08-26 01:04 UTCGHSA enrichment
  57. 2026-08-25 13:49 UTCEPSS rescore
  58. 2026-08-25 13:12 UTCGHSA enrichment
  59. 2026-08-25 01:19 UTCEG score recompute
  60. 2026-08-25 01:19 UTCGHSA enrichment
  61. 2026-08-24 13:26 UTCEG score recompute
  62. 2026-08-24 13:26 UTCGHSA enrichment
  63. 2026-08-24 01:33 UTCGHSA enrichment
  64. 2026-08-23 13:37 UTCGHSA enrichment
  65. 2026-08-23 01:45 UTCEG score recompute
  66. 2026-08-23 01:45 UTCGHSA enrichment
  67. 2026-08-23 00:19 UTCEPSS rescore
  68. 2026-08-22 13:51 UTCGHSA enrichment
  69. 2026-08-22 01:58 UTCEG score recompute
  70. 2026-08-22 01:58 UTCGHSA enrichment
  71. 2026-08-21 23:49 UTCEPSS rescore
  72. 2026-08-21 14:05 UTCGHSA enrichment
  73. 2026-08-21 02:13 UTCEG score recompute
  74. 2026-08-21 02:13 UTCGHSA enrichment
  75. 2026-08-20 22:55 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-60009?
CVE-2026-60009 is a high vulnerability published on August 5, 2026. In Eclipse Theia versions up to and including 1.73.1, the @theia/filesystem backend binds POST /file-upload in every filesystem-enabled deployment. The handler takes an attacker-supplied absolute path from the multipart uri field and calls fs.move(tmp, target, { overwrite: true }) with no workspace…
When was CVE-2026-60009 disclosed?
CVE-2026-60009 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-60009 actively exploited?
CVE-2026-60009 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 69.4% of all scored CVEs.
What is the CVSS score of CVE-2026-60009?
CVE-2026-60009 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-60009?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-60009, 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-2026-60009

Explore →

Is Your Infrastructure Affected by CVE-2026-60009?

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

Start Free Scan →Browse All CVEs