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TI-2022-20906 Aliases CVE-2022-42916GHSA-6295-5j29-3cc8

In curl before 7.86.0, the HSTS check could be bypassed to trick it into staying with…

Priority MEDIUM 44CWE-319Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-319.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02512 84th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*7.77.0 to before 7.86.0VulnerableHaxx
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*35VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*36VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*37VulnerableFedoraproject
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 12.6.3; 13.0 to before 13.2VulnerableApple
cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*8.2.0 to before 8.2.12; 9.0.0 to before 9.0.6VulnerableSplunk
cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*9.1.0VulnerableSplunk
  • cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* Versions 7.77.0 to before 7.86.0 Vulnerable ·Haxx
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* Versions 36 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* Versions 37 Vulnerable ·Fedoraproject
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 12.6.3; 13.0 to before 13.2 Vulnerable ·Apple
  • cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* Versions 8.2.0 to before 8.2.12; 9.0.0 to before 9.0.6 Vulnerable ·Splunk
  • cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:* Versions 9.1.0 Vulnerable ·Splunk

Remediation

Red Hat 2 advisories

  • RHSA-2022:8841 Released 2022-12-08 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP Server 2.4.51 SP1 security update
    • Red Hat JBoss Core Services
  • RHSA-2022:8840 Released 2022-12-08 · Red Hat rating Moderate
    Red Hat JBoss Core Services Apache HTTP Server 2.4.51 SP1 security update
    • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-curl-7.86.0-2.el7jbcs, jbcs-httpd24-httpd-2.4.51-37.el7jbcs, jbcs-httpd24-httpd-devel-2.4.51-37.el7jbcs +15
    • Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-curl-7.86.0-2.el8jbcs, jbcs-httpd24-httpd-2.4.51-37.el8jbcs, jbcs-httpd24-httpd-devel-2.4.51-37.el8jbcs +15

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat JBoss Core ServicesFixed RHSA-2022:8841
Red Hat JBoss Core Services on RHEL 7 ServerFixed RHSA-2022:8840
Red Hat JBoss Core Services on RHEL 8Fixed RHSA-2022:8840
Not affected: 6 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat JBoss Core Services on RHEL 7 Server
  • Red Hat JBoss Core Services on RHEL 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-42916
  2. 2026-10-03 Alias added: GHSA-6295-5j29-3cc8
  3. 2026-10-09 Fix available: RHSA-2022:8841 · Red Hat
  4. 2026-10-16 Fix available: Red Hat JBoss Core Services · Red Hat

References

Advisory 10

Other 1

Sources

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