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Vulnerability details: VCID-hh2k-8ecc-9uc5
Vulnerability ID VCID-hh2k-8ecc-9uc5
Aliases CVE-2022-42916
Summary In curl before 7.86.0, the HSTS check could be bypassed to trick it into staying with HTTP. Using its HSTS support, curl can be instructed to use HTTPS directly (instead of using an insecure cleartext HTTP step) even when HTTP is provided in the URL. This mechanism could be bypassed if the host name in the given URL uses IDN characters that get replaced with ASCII counterparts as part of the IDN conversion, e.g., using the character UTF-8 U+3002 (IDEOGRAPHIC FULL STOP) instead of the common ASCII full stop of U+002E (.). The earliest affected version is 7.77.0 2021-05-26.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-319 Cleartext Transmission of Sensitive Information
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-42916.json
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00064 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00064 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00064 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00064 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00064 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00064 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00064 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00064 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00064 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2022-42916
cvssv3.1 Medium https://curl.se/docs/CVE-2022-42916.html
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2022-42916
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-42916.json
https://api.first.org/data/v1/epss?cve=CVE-2022-42916
https://curl.se/docs/CVE-2022-42916.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-42916
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://hackerone.com/reports/1730660
http://www.openwall.com/lists/oss-security/2022/12/21/1
2135416 https://bugzilla.redhat.com/show_bug.cgi?id=2135416
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
CVE-2022-42916 https://nvd.nist.gov/vuln/detail/CVE-2022-42916
USN-5702-1 https://usn.ubuntu.com/5702-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-42916.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: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:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2022-42916
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
Exploit Prediction Scoring System (EPSS)
Percentile 0.14741
EPSS Score 0.00049
Published At Aug. 11, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:37:10.902487+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/5702-1/ 37.0.0