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Vulnerability details: VCID-14cb-wnj7-13e2
Vulnerability ID VCID-14cb-wnj7-13e2
Aliases CVE-2026-6253
Summary curl: curl: Proxy credential disclosure via redirects to unauthenticated proxies
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-201 Insertion of Sensitive Information Into Sent Data
CWE-522 Insufficiently Protected Credentials
System Score Found at
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-6253.json
epss 0.0003 https://api.first.org/data/v1/epss?cve=CVE-2026-6253
cvssv3.1 5.9 https://curl.se/docs/CVE-2026-6253.html
cvssv3.1 Medium https://curl.se/docs/CVE-2026-6253.html
ssvc Track https://curl.se/docs/CVE-2026-6253.html
cvssv3.1 5.9 https://curl.se/docs/CVE-2026-6253.json
ssvc Track https://curl.se/docs/CVE-2026-6253.json
cvssv3.1 5.9 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 5.9 https://hackerone.com/reports/3669637
ssvc Track https://hackerone.com/reports/3669637
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-6253.json
https://api.first.org/data/v1/epss?cve=CVE-2026-6253
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-6253
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2461202 https://bugzilla.redhat.com/show_bug.cgi?id=2461202
3669637 https://hackerone.com/reports/3669637
CVE-2026-6253.html https://curl.se/docs/CVE-2026-6253.html
CVE-2026-6253.json https://curl.se/docs/CVE-2026-6253.json
RHSA-2026:12916 https://access.redhat.com/errata/RHSA-2026:12916
USN-8227-1 https://usn.ubuntu.com/8227-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-6253.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:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://curl.se/docs/CVE-2026-6253.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:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-13T17:42:30Z/ Found at https://curl.se/docs/CVE-2026-6253.html
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://curl.se/docs/CVE-2026-6253.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:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-13T17:42:30Z/ Found at https://curl.se/docs/CVE-2026-6253.json
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://hackerone.com/reports/3669637
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:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-13T17:42:30Z/ Found at https://hackerone.com/reports/3669637
Exploit Prediction Scoring System (EPSS)
Percentile 0.09025
EPSS Score 0.0003
Published At May 29, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-29T08:39:50.779452+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-6253.json 38.6.0