CVE-2026-35022

✕ Withdrawn — historical dataCRITICALNVD 9.8
9.8CVSS
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.8Exploit: None knownExposed services: Not assessed

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

Anthropic Claude Code CLI and Claude Agent SDK contain an OS command injection vulnerability in authentication helper execution where helper configuration values are executed using shell=true without input validation. Attackers who can influence authentication settings can inject shell metacharacters through parameters like apiKeyHelper, awsAuthRefresh, awsCredentialExport, and gcpAuthRefresh to execute arbitrary commands with the privileges of the user or automation environment, enabling credential theft and environment variable exfiltration.

CVSS v3
9.8
EchelonGraph score
Not yet assessedThis CVE record was withdrawn by its numbering authority, so there is no vulnerability to rate.
EG Score
—
EG Risk
—
EPSS PROB
0.6%
EPSS %ILE
69th
KEV
Not listed

Published

April 6, 2026

Last Modified

April 29, 2026

Advisory Details (2)

Auto-updated Oct 8, 2026
⚠️ Active exploitation confirmed. No fix on record yet.
generic🔴 Active Exploitation

Claude Code CLI: 3 Command Injection Flaws — CI/CD Risk

https://phoenix.security/critical-ci-cd-nightmare-3-command-injection-flaws-in-claude-code-cli-allow-credential-exfiltration/
generic

Anthropic Claude Code & Agent SDK OS Command Injection via Authentication Helper | Advisories | VulnCheck

https://www.vulncheck.com/advisories/anthropic-claude-code-agent-sdk-os-command-injection-via-authentication-helper

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 0× in last 7d / 1× 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. 2026-09-21 12:19 UTCOSV refresh
  2. 2026-09-02 09:44 UTCOSV refresh
  3. 2026-08-16 08:22 UTCGHSA enrichment
  4. 2026-08-12 19:44 UTCGHSA enrichment
  5. 2026-08-09 05:01 UTCGHSA enrichment
  6. 2026-08-06 00:06 UTCGHSA enrichment
  7. 2026-08-02 14:22 UTCEG score recompute
  8. 2026-08-02 14:22 UTCGHSA enrichment
  9. 2026-07-23 03:10 UTCEG score recompute▼ 9.80
  10. 2026-07-17 16:59 UTCOSV refresh
  11. 2026-06-12 05:02 UTCGHSA enrichment
  12. 2026-06-12 01:18 UTCGHSA enrichment
  13. 2026-06-11 21:33 UTCGHSA enrichment
  14. 2026-06-10 20:28 UTCGHSA enrichment
  15. 2026-06-10 16:44 UTCGHSA enrichment
  16. 2026-06-10 12:59 UTCGHSA enrichment
  17. 2026-06-10 08:41 UTCGHSA enrichment
  18. 2026-06-10 04:57 UTCGHSA enrichment
  19. 2026-06-10 01:12 UTCGHSA enrichment
  20. 2026-06-09 17:48 UTCGHSA enrichment
  21. 2026-06-09 14:04 UTCGHSA enrichment
  22. 2026-06-08 12:52 UTCGHSA enrichment
  23. 2026-06-08 09:08 UTCGHSA enrichment
  24. 2026-06-08 05:17 UTCGHSA enrichment
  25. 2026-06-08 01:32 UTCGHSA enrichment
Show 29 more
  1. 2026-06-07 21:47 UTCGHSA enrichment
  2. 2026-06-07 18:02 UTCGHSA enrichment
  3. 2026-06-07 14:17 UTCGHSA enrichment
  4. 2026-06-07 10:27 UTCGHSA enrichment
  5. 2026-05-29 13:44 UTCEPSS rescore
  6. 2026-05-29 13:44 UTCEPSS rescore
  7. 2026-05-28 13:44 UTCEPSS rescore
  8. 2026-05-28 13:44 UTCEPSS rescore
  9. 2026-05-28 13:44 UTCEPSS rescore
  10. 2026-05-27 13:40 UTCEPSS rescore
  11. 2026-05-27 13:40 UTCEPSS rescore
  12. 2026-05-27 13:40 UTCEPSS rescore
  13. 2026-05-26 13:44 UTCEPSS rescore
  14. 2026-05-26 07:18 UTCEPSS rescore
  15. 2026-05-26 07:18 UTCEPSS rescore
  16. 2026-05-20 22:38 UTCEPSS rescore
  17. 2026-05-20 22:38 UTCEPSS rescore
  18. 2026-05-20 11:22 UTCEPSS rescore
  19. 2026-05-20 11:22 UTCEPSS rescore
  20. 2026-05-20 09:37 UTCGHSA enrichment
  21. 2026-05-20 05:22 UTCGHSA enrichment
  22. 2026-05-20 01:32 UTCGHSA enrichment
  23. 2026-05-19 21:29 UTCGHSA enrichment
  24. 2026-05-19 17:15 UTCGHSA enrichment
  25. 2026-05-19 13:04 UTCGHSA enrichment
  26. 2026-05-19 08:45 UTCGHSA enrichment
  27. 2026-05-19 05:00 UTCGHSA enrichment
  28. 2026-05-19 01:15 UTCEG score recompute
  29. 2026-05-19 01:15 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2026-35022?
CVE-2026-35022 is a critical vulnerability published on April 6, 2026. Anthropic Claude Code CLI and Claude Agent SDK contain an OS command injection vulnerability in authentication helper execution where helper configuration values are executed using shell=true without input validation. Attackers who can influence authentication settings can inject shell…
When was CVE-2026-35022 disclosed?
CVE-2026-35022 was first published on April 6, 2026, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-35022 actively exploited?
CVE-2026-35022 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (69th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-35022?
CVE-2026-35022 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-35022?
No fix for CVE-2026-35022 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.

Dependency Blast Radius

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