CVE-2026-78379

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 75% 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
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

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

Improper neutralization of input used for LLM prompting in the python_repl tool in Amazon Strands Agents Tools before 0.8.5 might allow remote actors to execute arbitrary Python code on the agent's host by bypassing the human consent gate, via a crafted prompt that forwards non_interactive_mode as a keyword argument through the batch tool. To remediate this issue, users should upgrade to version 0.8.5 or later.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 26, 2026

Advisory Details (2)

Auto-updated Aug 25, 2026
No patch confirmed yet.
generic

Client Challenge

https://pypi.org/project/strands-agents-tools/0.8.5/
generic

CVE-2026-78379 - Consent bypass in Strands Agents Tools python_repl tool

https://aws.amazon.com/security/security-bulletins/2026-089-aws/

Vendor Advisories for CVE-2026-78379(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 11× in last 7d / 49× 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. 2026-09-19 00:31 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 01:56 UTCEG score recompute
  4. 2026-09-16 16:08 UTCEG score recompute
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 05:15 UTCEPSS rescore
  7. 2026-09-15 06:16 UTCEG score recompute
  8. 2026-09-15 03:12 UTCEPSS rescore
  9. 2026-09-15 03:12 UTCEPSS rescore
  10. 2026-09-13 20:28 UTCEG score recompute
  11. 2026-09-12 21:56 UTCEG score recompute
  12. 2026-09-11 23:23 UTCEG score recompute
  13. 2026-09-11 14:53 UTCEPSS rescore
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-11 10:57 UTCEG score recompute
  16. 2026-09-10 12:02 UTCEG score recompute
  17. 2026-09-10 09:35 UTCEPSS rescore
  18. 2026-09-09 01:11 UTCEG score recompute
  19. 2026-09-08 22:01 UTCEPSS rescore
  20. 2026-09-08 02:32 UTCEG score recompute
  21. 2026-09-06 15:33 UTCEG score recompute
  22. 2026-09-06 13:48 UTCEPSS rescore
  23. 2026-09-05 17:01 UTCEG score recompute
  24. 2026-09-04 18:28 UTCEG score recompute
  25. 2026-09-04 07:08 UTCEG score recompute
Show 24 more
  1. 2026-09-04 05:07 UTCEPSS rescore
  2. 2026-09-02 20:43 UTCEG score recompute
  3. 2026-09-02 14:12 UTCEPSS rescore
  4. 2026-09-01 19:51 UTCEG score recompute
  5. 2026-09-01 13:54 UTCEPSS rescore
  6. 2026-09-01 08:35 UTCEG score recompute
  7. 2026-09-01 04:40 UTCEPSS rescore
  8. 2026-09-01 04:40 UTCEPSS rescore
  9. 2026-08-30 22:35 UTCEG score recompute
  10. 2026-08-30 19:18 UTCEPSS rescore
  11. 2026-08-30 19:17 UTCEPSS rescore
  12. 2026-08-30 11:20 UTCEG score recompute
  13. 2026-08-30 01:22 UTCEPSS rescore
  14. 2026-08-29 01:27 UTCEG score recompute
  15. 2026-08-28 21:42 UTCEPSS rescore
  16. 2026-08-27 15:33 UTCEG score recompute
  17. 2026-08-27 14:25 UTCEPSS rescore
  18. 2026-08-26 16:58 UTCEG score recompute
  19. 2026-08-26 14:47 UTCEPSS rescore
  20. 2026-08-25 20:23 UTCEG score recompute
  21. 2026-08-25 19:36 UTCEG score recompute
  22. 2026-08-25 19:20 UTCEG score recompute
  23. 2026-08-25 19:10 UTCEG score recompute
  24. 2026-08-25 19:09 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-78379?
CVE-2026-78379 is a high vulnerability published on August 25, 2026. Improper neutralization of input used for LLM prompting in the pythonrepl tool in Amazon Strands Agents Tools before 0.8.5 might allow remote actors to execute arbitrary Python code on the agent's host by bypassing the human consent gate, via a crafted prompt that forwards noninteractive_mode as a…
When was CVE-2026-78379 disclosed?
CVE-2026-78379 was first published in the National Vulnerability Database on August 25, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78379 actively exploited?
CVE-2026-78379 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 74.9% of all scored CVEs.
What is the CVSS score of CVE-2026-78379?
CVE-2026-78379 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-78379?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78379, 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

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