CVE-2026-85674

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-04. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

aider (aider-chat) automatically loads a .aider.conf.yml configuration file from the root of the git repository it is launched in. A crafted repository can set test-cmd (executed at startup) or lint-cmd (executed on the first file edit), which aider runs through a shell (subprocess with shell=True) without any user confirmation, LLM interaction, or API key. Consequently, a user who clones and runs aider inside an attacker-supplied repository achieves arbitrary command execution on their machine. The behavior is long-standing and was confirmed on 0.86.3.dev (current main).

CVSS v3
7.8
EG Score
7.8(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 10, 2026

Advisory Details (4)

Auto-updated Sep 4, 2026
No patch confirmed yet.
generic

aider 0.86.2 Remote Code Execution via .aider.conf.yml | Advisories | VulnCheck

https://www.vulncheck.com/advisories/aider-0.86.2-remote-code-execution-via-aider-conf-yml
generic

aider/aider/main.py at v0.86.2 · Aider-AI/aider · GitHub

https://github.com/Aider-AI/aider/blob/v0.86.2/aider/main.py
generic

GitHub - Aider-AI/aider: aider is AI pair programming in your terminal · GitHub

https://github.com/Aider-AI/aider
generic

Opening an untrusted repository with aider executes arbitrary commands at startup via .aider.conf.yml test-cmd / lint-cmd (no confirmation) · Issue #5254 · Aider-AI/aider · GitHub

https://github.com/Aider-AI/aider/issues/5254

Vendor Advisories for CVE-2026-85674(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 27× in last 7d / 79× 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. 2026-09-25 11:12 UTCGHSA enrichment
  2. 2026-09-24 21:56 UTCEG score recompute
  3. 2026-09-24 21:56 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 08:46 UTCGHSA enrichment
  6. 2026-09-23 20:10 UTCEG score recompute
  7. 2026-09-23 20:10 UTCGHSA enrichment
  8. 2026-09-23 17:54 UTCEPSS rescore
  9. 2026-09-23 07:34 UTCGHSA enrichment
  10. 2026-09-22 18:57 UTCEG score recompute
  11. 2026-09-22 18:57 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 06:21 UTCEG score recompute
  14. 2026-09-22 06:21 UTCGHSA enrichment
  15. 2026-09-21 21:09 UTCEPSS rescore
  16. 2026-09-21 17:44 UTCGHSA enrichment
  17. 2026-09-21 05:07 UTCEG score recompute
  18. 2026-09-21 05:07 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-20 16:09 UTCGHSA enrichment
  21. 2026-09-20 03:28 UTCEG score recompute
  22. 2026-09-20 03:28 UTCGHSA enrichment
  23. 2026-09-19 14:52 UTCGHSA enrichment
  24. 2026-09-19 02:15 UTCEG score recompute
  25. 2026-09-19 02:15 UTCGHSA enrichment
Show 54 more
  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 13:34 UTCGHSA enrichment
  3. 2026-09-18 00:58 UTCEG score recompute
  4. 2026-09-18 00:58 UTCGHSA enrichment
  5. 2026-09-17 19:32 UTCEPSS rescore
  6. 2026-09-17 12:21 UTCGHSA enrichment
  7. 2026-09-16 23:45 UTCEG score recompute
  8. 2026-09-16 23:45 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 11:08 UTCEG score recompute
  11. 2026-09-16 11:08 UTCGHSA enrichment
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-15 22:32 UTCGHSA enrichment
  14. 2026-09-15 09:56 UTCEG score recompute
  15. 2026-09-15 09:56 UTCGHSA enrichment
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-14 21:19 UTCGHSA enrichment
  19. 2026-09-14 08:41 UTCGHSA enrichment
  20. 2026-09-13 20:04 UTCEG score recompute
  21. 2026-09-13 20:04 UTCGHSA enrichment
  22. 2026-09-13 07:27 UTCGHSA enrichment
  23. 2026-09-12 18:51 UTCEG score recompute
  24. 2026-09-12 18:51 UTCGHSA enrichment
  25. 2026-09-12 06:14 UTCGHSA enrichment
  26. 2026-09-11 17:38 UTCEG score recompute
  27. 2026-09-11 17:38 UTCGHSA enrichment
  28. 2026-09-11 05:02 UTCGHSA enrichment
  29. 2026-09-10 16:26 UTCGHSA enrichment
  30. 2026-09-10 15:59 UTCEG score recompute
  31. 2026-09-10 15:59 UTCGHSA enrichment
  32. 2026-09-10 15:28 UTCEG score recompute
  33. 2026-09-10 15:28 UTCGHSA enrichment
  34. 2026-09-10 12:54 UTCEG score recompute
  35. 2026-09-10 12:54 UTCGHSA enrichment
  36. 2026-09-10 00:18 UTCGHSA enrichment
  37. 2026-09-09 11:42 UTCGHSA enrichment
  38. 2026-09-08 23:05 UTCGHSA enrichment
  39. 2026-09-08 07:41 UTCGHSA enrichment
  40. 2026-09-07 19:05 UTCEG score recompute
  41. 2026-09-07 19:05 UTCGHSA enrichment
  42. 2026-09-07 06:28 UTCGHSA enrichment
  43. 2026-09-06 17:50 UTCEG score recompute
  44. 2026-09-06 17:50 UTCGHSA enrichment
  45. 2026-09-06 13:48 UTCEPSS rescore
  46. 2026-09-06 05:13 UTCGHSA enrichment
  47. 2026-09-05 16:36 UTCEG score recompute
  48. 2026-09-05 16:36 UTCGHSA enrichment
  49. 2026-09-05 15:31 UTCEPSS rescore
  50. 2026-09-05 04:00 UTCEG score recompute
  51. 2026-09-05 04:00 UTCGHSA enrichment
  52. 2026-09-04 15:23 UTCEG score recompute
  53. 2026-09-04 14:45 UTCEG score recompute
  54. 2026-09-04 14:44 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85674?
CVE-2026-85674 is a high vulnerability published on September 4, 2026. aider (aider-chat) automatically loads a .aider.conf.yml configuration file from the root of the git repository it is launched in. A crafted repository can set test-cmd (executed at startup) or lint-cmd (executed on the first file edit), which aider runs through a shell (subprocess with shell=True)…
When was CVE-2026-85674 disclosed?
CVE-2026-85674 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85674 actively exploited?
CVE-2026-85674 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 85.6% of all scored CVEs.
What is the CVSS score of CVE-2026-85674?
CVE-2026-85674 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-85674?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85674, 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-2026-85674

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