CVE-2026-34938

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 1.3%, top 32% 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, nvd
Elevated
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 10.0Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

PraisonAI is a multi-agent teams system. Prior to version 1.5.90, execute_code() in praisonai-agents runs attacker-controlled Python inside a three-layer sandbox that can be fully bypassed by passing a str subclass with an overridden startswith() method to the _safe_getattr wrapper, achieving arbitrary OS command execution on the host. This issue has been patched in version 1.5.90.

CVSS v3
10.0
EG Score
10.0CRITICALmedium confidence
EG Risk
76
EG Risk 76/100

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
Severity100% × 45%
Exploitation40% × 40%
Automatability100% × 15%
EPSS PROB
0.8%
EPSS %ILE
56th
KEV
Not listed

Published

April 3, 2026

Last Modified

July 24, 2026

Advisory Details (1)

Auto-updated Oct 10, 2026
🔬 Proof of concept available. Patch available. Sources: github.
githubMentions a patch (unverified)🟡 PoC Available

Python Sandbox Escape via str Subclass startswith() Override in execute_code · Advisory · MervinPraison/PraisonAI · GitHub

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-6vh2-h83c-9294

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
praisonaiagents0.0.1 ... 1.5.9 (469 versions)
  • every version up to 1.5.90: fixed in 1.5.90
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 23× 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 175 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-34938?
CVE-2026-34938 is a critical vulnerability published on April 3, 2026. PraisonAI is a multi-agent teams system. Prior to version 1.5.90, executecode() in praisonai-agents runs attacker-controlled Python inside a three-layer sandbox that can be fully bypassed by passing a str subclass with an overridden startswith() method to the safe_getattr wrapper, achieving…
When was CVE-2026-34938 disclosed?
CVE-2026-34938 was first published on April 3, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34938 actively exploited?
CVE-2026-34938 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (56th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-34938?
CVE-2026-34938 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-34938?
A fix for CVE-2026-34938 is available: update to the fixed version the vendor names in its advisory.

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