CVE-2026-19019

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

Score 4.8 from GitHub Security Advisory (severity: LOW) published 2026-08-06. A secondary CVSS source baseline 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
4.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 4.8Exploit: Elevated riskExposed services: Not assessed

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

A security flaw has been discovered in poco-ai poco-agent up to 0.5.4. Affected is the function WorkspaceManager._setup_session_persistence of the file executor/app/core/workspace.py of the component Claude File Handler. The manipulation results in incomplete cleanup. The attack may be performed from remote. Attacks of this nature are highly complex. The exploitability is told to be difficult. The exploit has been released to the public and may be used for attacks.

CVSS v3
4.8
EG Score
4.8MEDIUMmedium confidence
EG Risk
38
EG Risk 38/100CISA SSVC

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
Severity48% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
39th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 6, 2026

Last Modified

August 12, 2026

Advisory Details (2)

Auto-updated Aug 6, 2026
No patch confirmed yet. Sources: github_pr.
github_pr

Protect host ~/.claude during executor workspace setup

Upstream fix in progress (PR #132 · poco-ai/poco-claw, state=open)

https://github.com/poco-ai/poco-claw/pull/132
generic

Executor task startup deletes host ~/.claude data on non-container runs · Issue #131 · poco-ai/poco-claw · GitHub

https://github.com/poco-ai/poco-claw/issues/131

Vendor Advisories for CVE-2026-19019(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 13× in last 7d / 65× 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 157 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-19019?
CVE-2026-19019 is a medium vulnerability published on August 6, 2026. A security flaw has been discovered in poco-ai poco-agent up to 0.5.4. Affected is the function WorkspaceManager.setupsession_persistence of the file executor/app/core/workspace.py of the component Claude File Handler. The manipulation results in incomplete cleanup. The attack may be performed from…
When was CVE-2026-19019 disclosed?
CVE-2026-19019 was first published on August 6, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19019 actively exploited?
CVE-2026-19019 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19019?
CVE-2026-19019 has a CVSS base score of 4.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-19019?
No fix for CVE-2026-19019 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-19019 are linked in the Vendor Advisories panel on this page.

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