CVE-2026-82217

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-31. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-68519 (ENISA EUVD) · GHSA-2qmg-qr8r-hr5c (GitHub Security Advisories)Source: ENISA EUVD

8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

In Eclipse Theia versions 1.73.0 up to but not including 1.75.0, the AI "Agent Mode" file-change tools (writeFileContent, suggestFileContent, and the replacement and state helpers) resolved a model-supplied file path without a workspace-containment check. A crafted relative path such as ../.bashrc, an absolute path, or a ~-expanded path could therefore write or delete files outside the workspace with the privileges of the Theia backend OS user. Because the path argument is influenced by model output, it can be steered through indirect prompt injection, and in Agent Mode writes are applied without a confirmation dialog. Writing to a host-executed file such as a shell startup file or ~/.ssh/authorized_keys can escalate to code execution on the backend.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity88% × 45%
Impact severity (EG Severity): CVSS 8.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
49th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.

EG Severity
8.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 31, 2026

Last Modified

September 1, 2026

Advisory Details (2)

Auto-updated Aug 31, 2026
Patch available. Sources: github_commit.
GitHub commit Patch Available

commit 28da106c254 (eclipse-theia/theia)

Patch available: eclipse-theia/theia v1.75.0 (contains commit 28da106c254)

https://github.com/eclipse-theia/theia/commit/28da106c254
Web page

[Eclipse Theia] Remote Code Execution via AI Agent-Mode workspace-escape file write (#624) · Issues · Eclipse Projects Security / vulnerability-reports · GitLab

https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/624

Vendor Advisories for CVE-2026-82217(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 74× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 177 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 77 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  2. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  3. 2026-10-25 13:58 UTCEG score recompute
  4. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  5. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  6. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  7. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  8. 2026-10-20 18:06 UTCEG score recompute
  9. 2026-10-20 18:05 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  10. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  11. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  12. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  13. 2026-10-18 03:08 UTCEG score recompute
  14. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  15. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  16. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  17. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  18. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  19. 2026-10-13 06:08 UTCEG score recompute
  20. 2026-10-13 06:08 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  21. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  22. 2026-10-12 14:55 UTCEG score recompute
  23. 2026-10-11 19:20 UTCEG score recompute
  24. 2026-10-11 16:36 UTCEG score recompute
  25. 2026-10-11 13:54 UTCEG score recompute
Show 75 more
  1. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  2. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  3. 2026-10-10 13:07 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  4. 2026-10-10 00:31 UTCEG score recompute
  5. 2026-10-10 00:31 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  7. 2026-10-09 02:22 UTCEG score recompute
  8. 2026-10-09 02:22 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  9. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  10. 2026-10-08 00:32 UTCEG score recompute
  11. 2026-10-08 00:32 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  13. 2026-10-07 09:03 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  14. 2026-10-06 20:26 UTCEG score recompute
  15. 2026-10-06 20:26 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  16. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  17. 2026-10-06 07:25 UTCEG score recompute
  18. 2026-10-06 07:25 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  19. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  20. 2026-10-05 16:47 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  21. 2026-10-05 03:32 UTCEG score recompute
  22. 2026-10-05 03:32 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  23. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  24. 2026-10-04 14:40 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  25. 2026-10-04 02:03 UTCEG score recompute
  26. 2026-10-04 02:03 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  27. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  28. 2026-10-03 13:27 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  29. 2026-10-02 22:11 UTCEG score recompute
  30. 2026-10-02 22:11 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  31. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  32. 2026-10-02 09:33 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  33. 2026-10-01 20:57 UTCEG score recompute
  34. 2026-10-01 20:57 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  35. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  36. 2026-10-01 08:20 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  37. 2026-09-30 19:42 UTCEG score recompute
  38. 2026-09-30 19:42 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  39. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  40. 2026-09-30 03:42 UTCEG score recompute
  41. 2026-09-30 03:42 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  42. 2026-09-29 11:53 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  43. 2026-09-28 23:05 UTCEG score recompute
  44. 2026-09-28 23:05 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  45. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  46. 2026-09-28 10:11 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  47. 2026-09-27 21:34 UTCEG score recompute
  48. 2026-09-27 21:34 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  49. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  50. 2026-09-27 08:58 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  51. 2026-09-26 20:21 UTCEG score recompute
  52. 2026-09-26 20:21 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  53. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  54. 2026-09-26 07:13 UTCEG score recompute
  55. 2026-09-26 07:12 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  56. 2026-09-25 11:21 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  57. 2026-09-24 22:04 UTCEG score recompute
  58. 2026-09-24 22:03 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  59. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  60. 2026-09-24 08:27 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  61. 2026-09-23 19:51 UTCEG score recompute
  62. 2026-09-23 19:51 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  63. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  64. 2026-09-23 07:05 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  65. 2026-09-22 18:29 UTCEG score recompute
  66. 2026-09-22 18:28 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  67. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  68. 2026-09-22 05:51 UTCEG score recompute
  69. 2026-09-22 05:51 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  70. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  71. 2026-09-21 17:15 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  72. 2026-09-21 03:59 UTCEG score recompute
  73. 2026-09-21 03:59 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8
  74. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  75. 2026-09-20 15:22 UTCGHSA enrichmentGHSA-2qmg-qr8r-hr5c · GitHub severity HIGH · GitHub CVSS 8.8

Frequently asked(5)

What is CVE-2026-82217?
CVE-2026-82217 is a high-severity vulnerability; its CVE record was published on August 31, 2026. In Eclipse Theia versions 1.73.0 up to but not including 1.75.0, the AI "Agent Mode" file-change tools (writeFileContent, suggestFileContent, and the replacement and state helpers) resolved a model-supplied file path without a workspace-containment check. A crafted relative path such as ../.bashrc,…
When was CVE-2026-82217 made public?
CVE-2026-82217 was made public on August 31, 2026: that is the date its CVE record's CNA, Eclipse Foundation, gives for when the vulnerability was made public. The CVE record itself was published on August 31, 2026. EchelonGraph's copy of the record carries a last-modified date of September 1, 2026; the record at its source may have been updated since.
Is CVE-2026-82217 actively exploited?
CVE-2026-82217 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (49th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-82217?
CVE-2026-82217 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-82217?
A fix for CVE-2026-82217 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-82217 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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