CVE•Published 2026-09-10•Modified 2026-09-11•1 article on news•4 live references•NVD data
CVE-2026-88899
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
—
Weaknesses (CWE)
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.
Timeline
Published 2026-09-10
Modified 2026-09-11
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-88899Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-88899Censys host search filtered to this CVE id.
grep.app
CVE-2026-88899Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-88899GitHub code search for direct mentions.
Google dork
"CVE-2026-88899" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.