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Vulnerability details: VCID-8zks-th64-33b8
Vulnerability ID VCID-8zks-th64-33b8
Aliases CVE-2026-3784
Summary curl: curl: Unauthorized access due to improper HTTP proxy connection reuse
Status Published
Exploitability 0.5
Weighted Severity 5.9
Risk 3.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-305 Authentication Bypass by Primary Weakness
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-3784.json
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2026-3784
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2026-3784
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2026-3784
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2026-3784
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2026-3784
epss 0.00015 https://api.first.org/data/v1/epss?cve=CVE-2026-3784
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2026-3784
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2026-3784
cvssv3.1 6.5 https://curl.se/docs/CVE-2026-3784.html
cvssv3.1 Low https://curl.se/docs/CVE-2026-3784.html
ssvc Track https://curl.se/docs/CVE-2026-3784.html
cvssv3.1 6.5 https://curl.se/docs/CVE-2026-3784.json
ssvc Track https://curl.se/docs/CVE-2026-3784.json
cvssv3.1 4.6 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 6.5 https://hackerone.com/reports/3584903
ssvc Track https://hackerone.com/reports/3584903
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-3784.json
https://api.first.org/data/v1/epss?cve=CVE-2026-3784
https://curl.se/docs/CVE-2026-3784.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-3784
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://hackerone.com/reports/3584903
2446449 https://bugzilla.redhat.com/show_bug.cgi?id=2446449
CVE-2026-3784.json https://curl.se/docs/CVE-2026-3784.json
USN-8084-1 https://usn.ubuntu.com/8084-1/
USN-8099-1 https://usn.ubuntu.com/8099-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-3784.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://curl.se/docs/CVE-2026-3784.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-11T15:48:38Z/ Found at https://curl.se/docs/CVE-2026-3784.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://curl.se/docs/CVE-2026-3784.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-11T15:48:38Z/ Found at https://curl.se/docs/CVE-2026-3784.json
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://hackerone.com/reports/3584903
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-11T15:48:38Z/ Found at https://hackerone.com/reports/3584903
Exploit Prediction Scoring System (EPSS)
Percentile 0.03037
EPSS Score 0.00015
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:30:31.229750+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-3784.json 38.0.0