CVE-2026-82533
CVE-2026-82533 · DeepSeek Harness < 0.1.2-alpha.1 Authentication Bypass via Host Header Spoofing
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
DeepSeek Harness before 0.1.2-alpha.1 contains an authentication bypass vulnerability that grants unauthenticated access to its local HTTP agent-control API by accepting a client-supplied loopback Host header in place of validating the actual TCP connection origin. On the default configuration, a confined tool-executed process can reach the loopback API without any port exposure and use it to escape its own OS sandbox, escalate to unconfined execution, and disable the approval prompt. When the port is externally reachable via tunnel, SSH forward, or reverse proxy, a remote attacker can exploit the same flaw to create sessions, execute arbitrary commands, and exfiltrate stored conversation transcripts without credentials.
CVSS 9.4 · Critique · EPSS 1,2% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: node
Produits et versions concernés
deepseek harness
- Versions du logiciel
- ≥ 0, < 0.1.2-alpha.1: Concernée (custom)
Mettez à jour vers 0.1.2-alpha.1
@deepseek-ai/dsh-client-connection npm
- Plages de versions concernées
- SEMVER: < 0.1.2-alpha.1
Mettez à jour vers 0.1.2-alpha.1
Sources originales
- https://www.ox.security/blog/cve-2026-82533-deepseek-harness-ai-agent-sandbox-escape/
- https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.2-alpha.1
- https://github.com/deepseek-ai/deepseek-harness/commit/3e24087bfaeabe40b58ba2f7b936895b8f93fe27
- https://www.vulncheck.com/advisories/deepseek-harness-alpha-1-authentication-bypass-via-host-header-spoofing
- https://nvd.nist.gov/vuln/detail/CVE-2026-82533