---
schema_version: '1.0'
id: security-20260709-d90476
url: https://osv.dev/vulnerability/CVE-2026-8458
url_hash: d90476220786eca49a80954394e401257ebadd90b82936b61a8c6b94cff60af0
canonical_url: https://osv.dev/vulnerability/CVE-2026-8458
source: osv:nvd
category: security/library
category_raw: cve/library
region: null
tags:
- cve
- CVE-2026-8458
- severity:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- https://github.com/curl/curl
- GIT
lang: en
published_at: '2026-07-03T06:14:42Z'
fetched_at: '2026-07-09T15:38:26Z'
updated_at: '2026-07-09T15:38:50Z'
status: published
content_hash: d4ab196bf6b0337efc7f301282bae4c2808410171d9ea5ae8def0835f0b20d21
license_note: full
summary: wrong reuse for different services
summary_source: rss
summary_en: wrong reuse for different services
entities:
- name: CVE-2022-26925
  type: event
- name: GitHub
  type: organization
- name: FORZA STYLE
  type: organization
- name: Correctional Services Department
  type: organization
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-2026-8458: wrong reuse for different services'
---

# CVE-2026-8458: wrong reuse for different services

## TL;DR
wrong reuse for different services

## Key Points
- cve / CVE-2026-8458 / severity:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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:N/I:H/A:N
**Advisory:** CVE-2026-8458

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

**Details:**
libcurl might in some circumstances reuse the wrong connection when asked to
do Negotiate-authenticated ones, even when they are set to use different
'services'.

libcurl features a pool of recent connections so that subsequent requests can
reuse an existing connection to avoid overhead.

When reusing a connection a range of criteria must be met. Due to a logical
error in the code, a request that was issued by an application could
wrongfully reuse an existing connection to the same server that was
authenticated using different services.

**References:**
- https://curl.se/docs/CVE-2026-8458.html
- https://curl.se/docs/CVE-2026-8458.json
- https://hackerone.com/reports/3721183
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8458.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-8458

_Data: OSV.dev (upstream: nvd) — https://osv.dev/vulnerability/CVE-2026-8458_

## Source
元記事: [CVE-2026-8458: wrong reuse for different services](https://osv.dev/vulnerability/CVE-2026-8458) — published 2026-07-03T06:14:42Z