CVE WatchSep 10, 2026

CVE-2026-88899

knowns versions before 0.31.0 fail to properly validate the x-opencode-directory request header in the /api/opencode proxy endpoint. Remote

CVSS

9.8

Critical

EPSS

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KEV

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Exploit Today

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0-100

Published: Sep 10, 2026 · Last modified: Sep 10, 2026 · CWE-73

EPSS · 30d

Not enough EPSS history yet.

Technical description

knowns versions before 0.31.0 fail to properly validate the x-opencode-directory request header in the /api/opencode proxy endpoint. Remote attackers can supply arbitrary directory paths to execute file operations outside the project root on the host system.

Official references

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