---
schema_version: '1.0'
id: security-20260709-594d76
url: https://osv.dev/vulnerability/CVE-2026-8286
url_hash: 594d767c96bb383c461c2f6c447c3eb7cbc2df6de2228f955c087bdb581fbf7f
canonical_url: https://osv.dev/vulnerability/CVE-2026-8286
source: osv:nvd
category: security/library
category_raw: cve/library
region: null
tags:
- cve
- CVE-2026-8286
- severity:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- https://github.com/curl/curl
- GIT
lang: en
published_at: '2026-07-03T06:14:17Z'
fetched_at: '2026-07-09T15:38:26Z'
updated_at: '2026-07-09T15:38:50Z'
status: published
content_hash: 9060f2aec5e2b41626164dd6d4439cdfd51893ba94a6134bea7e82fc95e5b424
license_note: full
summary: wrong STARTTLS connection reuse
summary_source: rss
summary_en: wrong STARTTLS connection reuse
entities:
- name: CVE-2022-26925
  type: event
- name: GitHub
  type: organization
- name: ConnectionPooler
  type: concept
key_facts: []
related: []
related_auto:
- name: GitLost
  type: concept
  weight: 4.0
- name: Windowsローカルセキュリティ認証機関(LSA
  type: location
  weight: 1.0
- name: AI Agent
  type: concept
  weight: 1.0
- name: Hy3
  type: artifact
  weight: 1.0
- name: OpenClaw
  type: artifact
  weight: 1.0
title: 'CVE-2026-8286: wrong STARTTLS connection reuse'
---

# CVE-2026-8286: wrong STARTTLS connection reuse

## TL;DR
wrong STARTTLS connection reuse

## Key Points
- cve / CVE-2026-8286 / severity:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N / https://github.com/curl/curl / GIT

## Details
**Severity:** CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
**Advisory:** CVE-2026-8286

**Affected (your watchlist):**
- `GIT:https://github.com/curl/curl` curl-8_9_1 → no fixed version listed [mac]

**Details:**
A vulnerability exists where a new transfer that uses STARTTLS to upgrade the
connection might reuse an existing live connection even though the TLS
configuration mismatches so it should not.

**References:**
- https://curl.se/docs/CVE-2026-8286.html
- https://curl.se/docs/CVE-2026-8286.json
- https://hackerone.com/reports/3718195
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8286.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-8286

_Data: OSV.dev (upstream: nvd) — https://osv.dev/vulnerability/CVE-2026-8286_

## Source
元記事: [CVE-2026-8286: wrong STARTTLS connection reuse](https://osv.dev/vulnerability/CVE-2026-8286) — published 2026-07-03T06:14:17Z