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01 Record

CVE-2026-26007

cryptography Subgroup Attack Due to Missing Subgroup Validation for SECT Curves

HighPUBLISHEDCNA: GitHub_M
CNA base score8.2 CVSS v4.0CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
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02 Description

cryptography Subgroup Attack Due to Missing Subgroup Validation for SECT Curves

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.39% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 32.7% of scored records. A rank, not a probability.
NVD base score
8.2 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Modified. NVD last modified this record on 2026-09-10.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-02-10 21:42Z8 MO AGO
Last updated
2026-09-16 12:04Z1 MO AGO
Reserved
2026-02-09
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 8.2)
CNA CVSS vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weaknesses
  • CWE-345Insufficient Verification of Data AuthenticityClass
  • CWE-354Improper Validation of Integrity Check ValueBase
Data version
5.2
Document digest
c2856e3834677dcc56ba963c38fc3ea1ebadd0fd77935fd0193dce795899d8ed

05 Affected products

VendorProductVersionsPlatforms
pycacryptography< 46.0.5—

06 References

07 Fixed in

AlmaLinux 8

  • fence-agents-aliyun
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-all
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-amt-ws
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-apc
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-apc-snmp
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-aws
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-azure-arm
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-bladecenter
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-brocade
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-cisco-mds
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-cisco-ucs
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-common
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-compute
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-drac5
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-eaton-snmp
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-emerson
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-eps
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-gce
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-heuristics-ping
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-hpblade
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ibm-powervs
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ibm-vpc
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ibmblade
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ifmib
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ilo-moonshot
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ilo-mp
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ilo-ssh
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ilo2
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-intelmodular
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ipdu
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ipmilan
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-kdump
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-kubevirt
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-lpar
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-mpath
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-nutanix-ahv
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-openstack
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-redfish
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-rhevm
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-rsa
    Fixed in 4.2.1-129.el8_10.25

8 further packages in AlmaLinux 8 not shown (first 40 listed).

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • fence-agents-aliyun
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-all
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-amt-ws
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-apc
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-apc-snmp
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-aws
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-azure-arm
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-bladecenter
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-brocade
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-cisco-mds
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-cisco-ucs
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-common
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-compute
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-drac5
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-eaton-snmp
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-emerson
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-eps
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-gce
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-heuristics-ping
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-hpblade
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ibm-powervs
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ibm-vpc
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ibmblade
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ifmib
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ilo-moonshot
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ilo-mp
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ilo-ssh
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ilo2
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-intelmodular
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ipdu
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-ipmilan
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-kdump
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-kubevirt
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-lpar
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-mpath
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-nutanix-ahv
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-openstack
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-redfish
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-rhevm
    Fixed in 4.2.1-129.el8_10.25
  • fence-agents-rsa
    Fixed in 4.2.1-129.el8_10.25

8 further packages in CloudLinux 8 not shown (first 40 listed).

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • python-cryptography
    No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • python-cryptography
    Fixed in 43.0.0-3+deb13u1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • python-cryptography
    Fixed in 46.0.5-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • python-cryptography
    Fixed in 3.4.8-1ubuntu2.3

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • python-cryptography
    Fixed in 41.0.7-4ubuntu0.3

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • python-cryptography
    Fixed in 43.0.0-1ubuntu1.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • python-cryptography
    Fixed in 1.2.3-1ubuntu0.3+esm3
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • python-cryptography
    Fixed in 2.1.4-1ubuntu1.4+esm3
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • python-cryptography
    Fixed in 2.8-3ubuntu0.3+esm2
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.