Digest · Monday
Security digest: June 29, 2026
1 known exploited (cisa kev) addition and 1 critical advisory.
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Take stock
- Do you run any of these? SimpleHelp SimpleHelp. They are being exploited in the wild (CISA KEV). Patch or mitigate if you do; CISA’s federal deadline is 2026-07-02.
- Go: 1 critical advisory (
github.com/googleapis/mcp-toolbox). Check withgovulncheck ./.... - None of it touches your stack? Then there is nothing to do today. That is a result, not a failure to read carefully.
Known exploited (CISA KEV) 1
Added to CISA’s catalog on this day: confirmed exploitation in the wild. Due date = CISA’s deadline for US federal agencies.
| CVE | Product and flaw | CISA due |
|---|---|---|
| CVE-2026-48558 | SimpleHelp SimpleHelp SimpleHelp Authentication Bypass Vulnerability | 2026-07-02 |
Critical advisories by ecosystem 1
GitHub-reviewed advisories rated critical, published this day (Pacific time).
Go 1
Check: govulncheck ./...
- MCP Toolbox HTTP tool path parameters allow traversal to unintended endpoints CVE-2026-11720 CVSS 9.3 Critical
github.com/googleapis/mcp-toolbox< 1.3.0 → fixed in 1.3.0