PyPI/httpcore2 CVE-2026-84381: high 8.1, EPSS 0.08%

HTTPX2: Secure WebSocket traffic sent without TLS through SOCKS proxies

Action: Upgrade httpcore2 to 2.10.0 or later.

pip install httpcore2==2.10.0

Affected

Fixed versions

Sources

• osv: PYSEC-2026-3844
• https://github.com/pydantic/httpx2/security/advisories/GHSA-7mj9-2mp8-4m2p
• https://nvd.nist.gov/vuln/detail/CVE-2026-84381
• https://github.com/pydantic/httpx2/pull/1104
• https://github.com/pydantic/httpx2/commit/fb008dd700b761d955210d9692475c3e2f379453
• https://github.com/pydantic/httpx2
• https://github.com/pydantic/httpx2/releases/tag/v2.10.0
• https://pypi.org/project/httpcore2
• https://github.com/advisories/GHSA-7mj9-2mp8-4m2p

CVE-2026-84381 · published 2026-09-10T09:45:00.880682Z · modified 2026-09-10T12:25:50.011150386Z · JSON