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TI-2026-31005 Aliases CVE-2026-42784GHSA-g33h-rrj9-75qv

Sequoia-openpgp: sequoia-openpgp: cryptographic integrity compromise via key flag confusion

Priority LOW 32CWE-347Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 8 fixed, 6 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-347.

Summary

A flaw was found in sequoia-openpgp. The library incorrectly infers key flags for older certificates when a key flags subpacket is missing, leading to a discrepancy in how key capabilities are viewed. This key flag confusion allows an attacker to bypass the back-signature check. Consequently, an attacker can illegitimately bind an arbitrary subkey to their own certificate and forge signatures, completely compromising cryptographic integrity.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00313 24th percentileScored 2026-11-07
Fix Partial Red Hat: 9 advisoriesRed Hat: 8 fixed, 6 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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
Red HatRed Hat Ansible Automation Platform 2.6 for RHEL 9—0.1.34-1.el9apPatch availableCNA
Red HatRed Hat Enterprise Linux 10—1.10.2.1-1.el10_2Patch availableCNA
Red HatRed Hat Enterprise Linux 10—1.3.0.2-1.el10_2Patch availableCNA
Red HatRed Hat Enterprise Linux 10—1.4.0.1-2.el10_2Patch availableCNA
Red HatRed Hat Enterprise Linux 9—1.10.2.1-1.el9_8Patch availableCNA
Red HatRed Hat Cost Management On-Premise 1—1791460851Patch availableCNA
Red HatRed Hat Hardened Images—0.3.2-4.hum1Patch availableCNA
Red HatRed Hat Hardened Images—1.10.3-0.3.hum1Patch availableCNA
Red HatConfidential Compute Attestation——No fix listedCNA
Red HatConfidential Compute Attestation——No fix listedCNA
Red HatConfidential Compute Attestation——No fix listedCNA
Red HatConfidential Compute Attestation——No fix listedCNA
Red HatConfidential Compute Attestation——No fix listedCNA
Red HatRed Hat Ansible Automation Platform 2——No fix listedCNA
Red HatRed Hat Ansible Automation Platform 2——No fix listedCNA
Red HatRed Hat Enterprise Linux 10——No fix listedCNA
Red HatRed Hat Enterprise Linux 10——Not affectedCNA
Red HatRed Hat Enterprise Linux 10——Not affectedCNA
Red HatRed Hat Enterprise Linux 9——Not affectedCNA
Red HatRed Hat OpenShift Container Platform 4——No fix listedCNA
Red HatRed Hat Satellite 6——No fix listedCNA
Red HatRed Hat Satellite 6——No fix listedCNA
Red HatRed Hat Trusted Profile Analyzer——No fix listedCNA
Red HatRed Hat Trusted Profile Analyzer——Not affectedCNA
  • Red Hat Ansible Automation Platform 2.6 for RHEL 9 VendorRed Hat Affected — Fixed in 0.1.34-1.el9ap Patch available CNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 1.10.2.1-1.el10_2 Patch available CNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 1.3.0.2-1.el10_2 Patch available CNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 1.4.0.1-2.el10_2 Patch available CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 1.10.2.1-1.el9_8 Patch available CNA
  • Red Hat Cost Management On-Premise 1 VendorRed Hat Affected — Fixed in 1791460851 Patch available CNA
  • Red Hat Hardened Images VendorRed Hat Affected — Fixed in 0.3.2-4.hum1 Patch available CNA
  • Red Hat Hardened Images VendorRed Hat Affected — Fixed in 1.10.3-0.3.hum1 Patch available CNA
  • Confidential Compute Attestation VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Confidential Compute Attestation VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Confidential Compute Attestation VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Confidential Compute Attestation VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Confidential Compute Attestation VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat OpenShift Container Platform 4 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Satellite 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Satellite 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Trusted Profile Analyzer VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Trusted Profile Analyzer VendorRed Hat Affected — Fixed in — Not affected CNA

CPE names CNA · 15

CPEVersionsRoleVendor
cpe:/a:redhat:ansible_automation_platform:2.6::el92.6—Red Hat
cpe:/a:redhat:ansible_automation_platform_developer:2.6::el92.6—Red Hat
cpe:/o:redhat:enterprise_linux:10.210.2—Red Hat
cpe:/a:redhat:enterprise_linux:9::crb9—Red Hat
cpe:/o:redhat:enterprise_linux:9::baseos9—Red Hat
cpe:/a:redhat:cost_management_on_premise:1::el101—Red Hat
cpe:/a:redhat:hummingbird:11—Red Hat
cpe:/a:redhat:confidential_compute_attestation:11—Red Hat
cpe:/a:redhat:ansible_automation_platform:22—Red Hat
cpe:/a:redhat:enterprise_linux:1010—Red Hat
  • cpe:/a:redhat:ansible_automation_platform:2.6::el9 Versions 2.6 — ·Red Hat
  • cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9 Versions 2.6 — ·Red Hat
  • cpe:/o:redhat:enterprise_linux:10.2 Versions 10.2 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:9::crb Versions 9 — ·Red Hat
  • cpe:/o:redhat:enterprise_linux:9::baseos Versions 9 — ·Red Hat
  • cpe:/a:redhat:cost_management_on_premise:1::el10 Versions 1 — ·Red Hat
  • cpe:/a:redhat:hummingbird:1 Versions 1 — ·Red Hat
  • cpe:/a:redhat:confidential_compute_attestation:1 Versions 1 — ·Red Hat
  • cpe:/a:redhat:ansible_automation_platform:2 Versions 2 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:10 Versions 10 — ·Red Hat
Show 5 more CPE
CPEVersionsRoleVendor
cpe:/a:redhat:enterprise_linux:99—Red Hat
cpe:/a:redhat:openshift:44—Red Hat
cpe:/a:redhat:satellite:66—Red Hat
cpe:/a:redhat:trusted_profile_analyzer:22—Red Hat
cpe:/a:redhat:trusted_profile_analyzer:33—Red Hat
  • cpe:/a:redhat:enterprise_linux:9 Versions 9 — ·Red Hat
  • cpe:/a:redhat:openshift:4 Versions 4 — ·Red Hat
  • cpe:/a:redhat:satellite:6 Versions 6 — ·Red Hat
  • cpe:/a:redhat:trusted_profile_analyzer:2 Versions 2 — ·Red Hat
  • cpe:/a:redhat:trusted_profile_analyzer:3 Versions 3 — ·Red Hat

Remediation

Red Hat 9 advisories

  • RHSA-2026:94791 Released 2026-11-03 · Red Hat rating Important
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images rpm-sequoia-1.10.3-0.3.hum1@aarch64, rpm-sequoia-1.10.3-0.3.hum1@s390x, rpm-sequoia-1.10.3-0.3.hum1@x86_64 +4
  • RHSA-2026:79357 Released 2026-10-08 · Red Hat rating Important
    Red Hat Cost Management On-Premise container image update
    • Red Hat Cost Management On-Premise 1 registry.redhat.io/costmanagement/costmanagement-ui-rhel10
  • RHSA-2026:76737 Released 2026-10-07 · Red Hat rating Important
    rust-sequoia-sq security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) rust-sequoia-sq-1.4.0.1-2.el10_2, sequoia-sq-1.4.0.1-2.el10_2
Show 6 more Red Hat advisories
  • RHSA-2026:76735 Released 2026-10-06 · Red Hat rating Important
    rust-sequoia-sqv security update
    • Red Hat Enterprise Linux AppStream (v. 10) rust-sequoia-sqv-1.3.0.2-1.el10_2, sequoia-sqv-1.3.0.2-1.el10_2
  • RHSA-2026:76733 Released 2026-10-06 · Red Hat rating Important
    rust-rpm-sequoia security update
    • Red Hat Enterprise Linux BaseOS (v. 9) rpm-sequoia-1.10.2.1-1.el9_8, rust-rpm-sequoia-1.10.2.1-1.el9_8
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) rpm-sequoia-devel-1.10.2.1-1.el9_8
  • RHSA-2026:76734 Released 2026-10-06 · Red Hat rating Important
    rust-rpm-sequoia security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS (v. 10) rpm-sequoia-1.10.2.1-1.el10_2, rust-rpm-sequoia-1.10.2.1-1.el10_2
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) rpm-sequoia-devel-1.10.2.1-1.el10_2
  • RHSA-2026:42902 Released 2026-07-21 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images podman-sequoia-0.3.2-4.hum1@aarch64, podman-sequoia-0.3.2-4.hum1@x86_64, rust-podman-sequoia-0.3.2-4.hum1@src
  • RHSA-2026:42078 Released 2026-07-20 · Red Hat rating Important
    Red Hat Ansible Automation Platform 2.5 Product Security and Bug Fix Update
    • Red Hat Ansible Automation Platform 2.5 for RHEL 8 ansible-core-1:2.16.19-1.el8ap, ansible-test-1:2.16.19-1.el8ap, automation-controller-4.6.30-2.el8ap +24
    • Red Hat Ansible Automation Platform 2.5 for RHEL 9 ansible-core-1:2.16.19-1.el9ap, ansible-test-1:2.16.19-1.el9ap, automation-controller-4.6.30-2.el9ap +24
  • RHSA-2026:34160 Released 2026-07-01 · Red Hat rating Important
    Red Hat Ansible Automation Platform 2.6 Product Security and Bug Fix Update
    • Red Hat Ansible Automation Platform 2.6 for RHEL 9 automation-controller-4.7.13-2.el9ap, automation-controller-cli-4.7.13-2.el9ap, automation-controller-server-4.7.13-2.el9ap +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Confidential Compute AttestationAffectedNo fix yet
Red Hat Ansible Automation Platform 2AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 10AffectedNo fix planned: Will not fix
Red Hat OpenShift Container Platform 4AffectedNo fix yet
Red Hat Satellite 6AffectedNo fix yet
Red Hat Trusted Profile AnalyzerAffectedNo fix planned: Will not fix
Red Hat Ansible Automation Platform 2.6 for RHEL 9Fixed RHSA-2026:34160
Red Hat Cost Management On-Premise 1Fixed RHSA-2026:79357
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:76735, RHSA-2026:76737
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:76734
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:76733
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:76734
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:76733
Red Hat Hardened ImagesFixed RHSA-2026:42902, RHSA-2026:94791
Not affected: 4 products
  • Red Hat Ansible Automation Platform 2.6 for RHEL 9
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 9
  • Red Hat Trusted Profile Analyzer

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42784
  2. 2026-10-03 Alias added: GHSA-g33h-rrj9-75qv
  3. 2026-10-06 Fix available: RHSA-2026:76734 · Red Hat
  4. 2026-10-06 Fix available: RHSA-2026:76733 · Red Hat
  5. 2026-10-06 Fix available: Red Hat Enterprise Linux BaseOS (v. 10), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) +1 · Red Hat
  6. 2026-10-06 Fix available: rust-rpm-sequoia@0:1.10.2.1-1.el10_2, rust-rpm-sequoia@0:1.10.2.1-1.el9_8 · CNA
  7. 2026-10-06 2 new references · CNA
  8. 2026-10-06 Fix available: rust-sequoia-sqv@0:1.3.0.2-1.el10_2 · CNA
  9. 2026-10-06 1 new reference · CNA
  10. 2026-10-07 Fix available: RHSA-2026:76735 · Red Hat
  11. 2026-10-07 Fix available: Red Hat Enterprise Linux AppStream (v. 10) · Red Hat
  12. 2026-10-07 Affected versions changed · Red Hat
  13. 2026-10-07 Fix available: rust-sequoia-sq@0:1.4.0.1-2.el10_2 · CNA
  14. 2026-10-07 1 new reference · CNA
  15. 2026-10-07 Fix available: RHSA-2026:76737 · Red Hat
  16. 2026-10-09 Fix available: RHSA-2026:79357 · Red Hat
  17. 2026-10-09 Fix available: RHSA-2026:34160 · Red Hat
  18. 2026-10-09 Fix available: RHSA-2026:42078 · Red Hat
  19. 2026-10-09 Fix available: Red Hat Ansible Automation Platform 2.6 for RHEL 9, Red Hat Cost Management On-Premise 1 · Red Hat
  20. 2026-10-09 Fix available: costmanagement/costmanagement-ui-rhel10@1791460851, python3.12-pysequoia@0:0.1.34-1.el9ap · CNA
  21. 2026-10-09 3 new references · CNA
  22. 2026-10-16 Affected versions changed · CNA
  23. 2026-10-16 Affected versions changed · Red Hat
  24. 2026-11-03 Affected versions changed · CNA
  25. 2026-11-03 Affected versions changed · Red Hat
  26. 2026-11-04 Fix available: [email protected] · CNA
  27. 2026-11-04 1 new reference · CNA
  28. 2026-11-04 Fix available: RHSA-2026:94791 · Red Hat
  29. 2026-11-04 Affected versions changed · Red Hat

References

Advisory 9

Other 2

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences