Anthropic Claude Code < 2.0.65 API Key Leak via Project Settings (CVE-2026-21852)

The version of Anthropic Claude Code installed on the remote host is prior to 2.0.65. It is, therefore, affected by an information disclosure vulnerability. A vulnerability in the project-load flow allowed malicious repositories to exfiltrate data including Anthropic API keys before users confirm...

CVE-2026-21852

creationtimestamp| type| source ---|---|--- 2026-01-24 21:23:23+00:00| seen| https://gist.github.com/alon710/53ef3cf299982796039e042072a8e56e 2026-02-25 14:30:16+00:00| seen| https://bsky.app/profile/cyber-news-fi.bsky.social/post/3mfovfveqi32m 2026-02-25 20:26:26+00:00| seen|...

@kimuson/claude-code-viewer (>=0.4.2-beta.2, <=0.5.9), @netlify/agent-runner-cli (>=1.31.0-alpha, <=1.58.1-alpha) +14 more potentially affected by CVE-2026-21852 via @anthropic-ai/claude-code (>=2.0.0, <=2.0.64)

@anthropic-ai/claude-code NPM version =2.0.0, =0.4.2-beta.2, =1.31.0-alpha, =0.0.1-rc.1, =0.12.0, =0.5.2, =0.12.1, =0.0.0, =0.1.2, =0.11.1, =0.11.0, =1.0.0, =0.10.2, =0.11.5 and more Source cves: CVE-2026-21852 Source advisory: SNYK:JS-ANTHROPICAICLAUDECODE-15046268...

@kimuson/claude-code-viewer (>=0.4.2-beta.2, <=0.5.9), @netlify/agent-runner-cli (>=1.31.0-alpha, <=1.58.1-alpha) +14 more potentially affected by CVE-2026-21852 via @anthropic-ai/claude-code (>=2.0.0, <=2.0.64)

@anthropic-ai/claude-code NPM version =2.0.0, =0.4.2-beta.2, =1.31.0-alpha, =0.0.1-rc.1, =0.12.0, =0.5.2, =0.12.1, =0.0.0, =0.1.2, =0.11.1, =0.11.0, =1.0.0, =0.10.2, =0.11.5 and more Source cves: CVE-2026-21852 Source advisory: OSV:GHSA-JH7P-QR78-84P7...