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BREW-CRYPTOGRAPHY-CVE-20… (CVE-2026-26007)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:41 – Updated: 2026-09-09 23:49 – Source website
VLAI
Summary
cryptography Subgroup Attack Due to Missing Subgroup Validation for SECT Curves
Details
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the public_key_from_numbers (or EllipticCurvePublicNumbers.public_key()), EllipticCurvePublicNumbers.public_key(), load_der_public_key() and load_pem_public_key() functions do not verify that the point belongs to the expected prime-order subgroup of the curve. This missing validation allows an attacker to provide a public key point P from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as S = [victim_private_key]P via ECDH, this leaks information about victim_private_key mod (small_subgroup_order). For curves with cofactor > 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it's easy to forge signatures on the small subgroup. Only SECT curves are impacted by this. This vulnerability is fixed in 46.0.5.
Severity
References
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"upstream_fixed_in": "46.0.5"
},
"package": {
"ecosystem": "Homebrew",
"name": "cryptography",
"purl": "pkg:brew/cryptography"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "50.0.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "git",
"upstream_evidence": [
{
"ecosystem": "GIT",
"key": "https://github.com/pyca/cryptography",
"name": "https://github.com/pyca/cryptography",
"strategy": "git",
"subject_version": "50.0.1"
},
{
"ecosystem": "PyPI",
"key": "pkg:pypi/cryptography@50.0.1",
"name": "cryptography",
"strategy": "registry",
"subject_version": "50.0.1"
}
]
},
"details": "cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the public_key_from_numbers (or EllipticCurvePublicNumbers.public_key()), EllipticCurvePublicNumbers.public_key(), load_der_public_key() and load_pem_public_key() functions do not verify that the point belongs to the expected prime-order subgroup of the curve. This missing validation allows an attacker to provide a public key point P from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as S = [victim_private_key]P via ECDH, this leaks information about victim_private_key mod (small_subgroup_order). For curves with cofactor \u003e 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it\u0027s easy to forge signatures on the small subgroup. Only SECT curves are impacted by this. This vulnerability is fixed in 46.0.5.",
"id": "BREW-cryptography-CVE-2026-26007",
"modified": "2026-09-09T23:49:07Z",
"published": "2026-08-13T16:41:16Z",
"references": [
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/02/10/4"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26007.json"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:10184"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:12176"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:13512"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:13545"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:13553"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:13672"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:19355"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:21431"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:21517"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:22330"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:22993"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:2694"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:5168"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:5665"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:6308"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:6309"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:6497"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:6567"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:6568"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:7295"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/security/cve/CVE-2026-26007"
},
{
"type": "ADVISORY",
"url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26007.json"
},
{
"type": "ADVISORY",
"url": "https://github.com/pyca/cryptography/security/advisories/GHSA-r6ph-v2qm-q3c2"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26007"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2438762"
},
{
"type": "FIX",
"url": "https://github.com/pyca/cryptography/commit/0eebb9dbb6343d9bc1d91e5a2482ed4e054a6d8c"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "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",
"type": "CVSS_V4"
}
],
"summary": "cryptography Subgroup Attack Due to Missing Subgroup Validation for SECT Curves",
"upstream": [
"CVE-2026-26007",
"GHSA-r6ph-v2qm-q3c2",
"PYSEC-2026-2141"
]
}
CVE-2026-26007 (GCVE-0-2026-26007)
Vulnerability from cvelistv5 – Published: 2026-02-10 21:42 – Updated: 2026-09-16 12:04
VLAI
EPSS
VEX
Title
cryptography Subgroup Attack Due to Missing Subgroup Validation for SECT Curves
Summary
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the public_key_from_numbers (or EllipticCurvePublicNumbers.public_key()), EllipticCurvePublicNumbers.public_key(), load_der_public_key() and load_pem_public_key() functions do not verify that the point belongs to the expected prime-order subgroup of the curve. This missing validation allows an attacker to provide a public key point P from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as S = [victim_private_key]P via ECDH, this leaks information about victim_private_key mod (small_subgroup_order). For curves with cofactor > 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it's easy to forge signatures on the small subgroup. Only SECT curves are impacted by this. This vulnerability is fixed in 46.0.5.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-11 21:28 UTC
CWE
Assigner
References
26 references
| URL | Tags |
|---|---|
| https://github.com/pyca/cryptography/security/adv… | x_refsource_CONFIRM |
| https://github.com/pyca/cryptography/commit/0eebb… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2026/02/10/4 | |
| https://access.redhat.com/security/cve/CVE-2026-26007 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2438762 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:13512 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:12176 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22330 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:21517 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:21431 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13672 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:19355 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:6308 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13553 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13545 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:6309 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2694 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7295 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:10184 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:5665 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:6568 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:6497 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:6567 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:5168 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22993 | vendor-advisoryx_refsource_REDHAT |
Impacted products
52 products
| Vendor | Product | Version | |
|---|---|---|---|
| pyca | cryptography |
Affected:
< 46.0.5
|
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 |
Unaffected:
0:4.6.28-3.el8ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 |
Unaffected:
0:4.6.28-3.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el9 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:4.2.1-129.el8_10.25 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:4.10.0-110.el9_8.2 , < *
(rpm)
Unaffected: 0:4.10.0-98.el9_7.12 , < * (rpm) cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:4.10.0-43.el9_2.21 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2 |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
0:4.10.0-62.el9_4.24 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.4 |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:4.10.0-86.el9_6.16 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 |
Unaffected:
1774446874 , < *
(rpm)
Unaffected: 1777403872 , < * (rpm) cpe:/a:redhat:ansible_automation_platform:2.5::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 |
Unaffected:
1774414699 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1777296732 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1774417022 , < *
(rpm)
Unaffected: 1777398576 , < * (rpm) cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1774363040 , < *
(rpm)
Unaffected: 1777387242 , < * (rpm) cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1777311601 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1774644659 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Discovery 2 |
Unaffected:
1770913597 , < *
(rpm)
cpe:/a:redhat:discovery:2::el9 |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
46.0.7-1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776338381 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776343111 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776257621 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776413275 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776243239 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776243238 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776243299 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776243249 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776243309 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776336652 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776319193 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776319213 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776319200 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776319190 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776319179 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776319185 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776318795 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776319453 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776336534 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776319275 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat Quay 3.10 |
Unaffected:
1773971077 , < *
(rpm)
cpe:/a:redhat:quay:3.10::el8 |
|
| Red Hat | Red Hat Quay 3.15 |
Unaffected:
1775169219 , < *
(rpm)
cpe:/a:redhat:quay:3.15::el8 |
|
| Red Hat | Red Hat Quay 3.16 |
Unaffected:
1775069491 , < *
(rpm)
Unaffected: 1775169226 , < * (rpm) cpe:/a:redhat:quay:3.16::el9 |
|
| Red Hat | Red Hat Quay 3.9 |
Unaffected:
1773936323 , < *
(rpm)
cpe:/a:redhat:quay:3.9::el8 |
|
| Red Hat | Red Hat Satellite 6.18 |
Unaffected:
1780492008 , < *
(rpm)
cpe:/a:redhat:satellite:6.18::el9 |
|
| Red Hat | OpenShift Lightspeed |
cpe:/a:redhat:openshift_lightspeed
|
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2 |
cpe:/a:redhat:acm:2
|
|
| Red Hat | Red Hat Ansible Automation Platform 2 |
cpe:/a:redhat:ansible_automation_platform:2
|
|
| Red Hat | Red Hat Ansible Automation Platform Ansible Core 2 |
cpe:/a:redhat:ansible_core:2
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai
|
|
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6
|
|
| Red Hat | Red Hat Trusted Artifact Signer |
cpe:/a:redhat:trusted_artifact_signer:1
|
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GHSA-R6PH-V2QM-Q3C2
Vulnerability from github – Published: 2026-02-10 21:27 – Updated: 2026-02-11 14:14
VLAI
Summary
cryptography Vulnerable to a Subgroup Attack Due to Missing Subgroup Validation for SECT Curves
Details
Vulnerability Summary
The public_key_from_numbers (or EllipticCurvePublicNumbers.public_key()), EllipticCurvePublicNumbers.public_key(), load_der_public_key() and load_pem_public_key() functions do not verify that the point belongs to the expected prime-order subgroup of the curve.
This missing validation allows an attacker to provide a public key point P from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as S = [victim_private_key]P via ECDH, this leaks information about victim_private_key mod (small_subgroup_order). For curves with cofactor > 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it's easy to forge signatures on the small subgroup.
Only SECT curves are impacted by this.
Credit
This vulnerability was discovered by: - XlabAI Team of Tencent Xuanwu Lab - Atuin Automated Vulnerability Discovery Engine
Severity
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},
"details": "## Vulnerability Summary\n\nThe `public_key_from_numbers` (or `EllipticCurvePublicNumbers.public_key()`), `EllipticCurvePublicNumbers.public_key()`, `load_der_public_key()` and `load_pem_public_key()` functions do not verify that the point belongs to the expected prime-order subgroup of the curve.\n\nThis missing validation allows an attacker to provide a public key point `P` from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as `S = [victim_private_key]P` via ECDH, this leaks information about `victim_private_key mod (small_subgroup_order)`. For curves with cofactor \u003e 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it\u0027s easy to forge signatures on the small subgroup.\n\nOnly SECT curves are impacted by this.\n\n## Credit\n\nThis vulnerability was discovered by:\n- XlabAI Team of Tencent Xuanwu Lab\n- Atuin Automated Vulnerability Discovery Engine",
"id": "GHSA-r6ph-v2qm-q3c2",
"modified": "2026-02-11T14:14:19Z",
"published": "2026-02-10T21:27:06Z",
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"url": "https://github.com/pyca/cryptography/security/advisories/GHSA-r6ph-v2qm-q3c2"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26007"
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{
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"url": "http://www.openwall.com/lists/oss-security/2026/02/10/4"
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"summary": "cryptography Vulnerable to a Subgroup Attack Due to Missing Subgroup Validation for SECT Curves"
}
PYSEC-2026-2141
Vulnerability from pysec - Published: 2026-02-10 22:17 - Updated: 2026-07-13 05:48
VLAI
Details
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the public_key_from_numbers (or EllipticCurvePublicNumbers.public_key()), EllipticCurvePublicNumbers.public_key(), load_der_public_key() and load_pem_public_key() functions do not verify that the point belongs to the expected prime-order subgroup of the curve. This missing validation allows an attacker to provide a public key point P from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as S = [victim_private_key]P via ECDH, this leaks information about victim_private_key mod (small_subgroup_order). For curves with cofactor > 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it's easy to forge signatures on the small subgroup. Only SECT curves are impacted by this. This vulnerability is fixed in 46.0.5.
Severity
6.5 (Medium)
Impacted products
| Name | purl | cryptography | pkg:pypi/cryptography |
|---|
Aliases
{
"affected": [
{
"ecosystem_specific": {},
"package": {
"ecosystem": "PyPI",
"name": "cryptography",
"purl": "pkg:pypi/cryptography"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "46.0.5"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.1",
"0.2",
"0.2.1",
"0.2.2",
"0.3",
"0.4",
"0.5",
"0.5.1",
"0.5.2",
"0.5.3",
"0.5.4",
"0.6",
"0.6.1",
"0.7",
"0.7.1",
"0.7.2",
"0.8",
"0.8.1",
"0.8.2",
"0.9",
"0.9.1",
"0.9.2",
"0.9.3",
"1.0",
"1.0.1",
"1.0.2",
"1.1",
"1.1.1",
"1.1.2",
"1.2",
"1.2.1",
"1.2.2",
"1.2.3",
"1.3",
"1.3.1",
"1.3.2",
"1.3.3",
"1.3.4",
"1.4",
"1.5",
"1.5.1",
"1.5.2",
"1.5.3",
"1.6",
"1.7",
"1.7.1",
"1.7.2",
"1.8",
"1.8.1",
"1.8.2",
"1.9",
"2.0",
"2.0.1",
"2.0.2",
"2.0.3",
"2.1",
"2.1.1",
"2.1.2",
"2.1.3",
"2.1.4",
"2.2",
"2.2.1",
"2.2.2",
"2.3",
"2.3.1",
"2.4",
"2.4.1",
"2.4.2",
"2.5",
"2.6",
"2.6.1",
"2.7",
"2.8",
"2.9",
"2.9.1",
"2.9.2",
"3.0",
"3.1",
"3.1.1",
"3.2",
"3.2.1",
"3.3",
"3.3.1",
"3.3.2",
"3.4",
"3.4.1",
"3.4.2",
"3.4.3",
"3.4.4",
"3.4.5",
"3.4.6",
"3.4.7",
"3.4.8",
"35.0.0",
"36.0.0",
"36.0.1",
"36.0.2",
"37.0.0",
"37.0.1",
"37.0.2",
"37.0.3",
"37.0.4",
"38.0.0",
"38.0.1",
"38.0.2",
"38.0.3",
"38.0.4",
"39.0.0",
"39.0.1",
"39.0.2",
"40.0.0",
"40.0.1",
"40.0.2",
"41.0.0",
"41.0.1",
"41.0.2",
"41.0.3",
"41.0.4",
"41.0.5",
"41.0.6",
"41.0.7",
"42.0.0",
"42.0.1",
"42.0.2",
"42.0.3",
"42.0.4",
"42.0.5",
"42.0.6",
"42.0.7",
"42.0.8",
"43.0.0",
"43.0.1",
"43.0.3",
"44.0.0",
"44.0.1",
"44.0.2",
"44.0.3",
"45.0.0",
"45.0.1",
"45.0.2",
"45.0.3",
"45.0.4",
"45.0.5",
"45.0.6",
"45.0.7",
"46.0.0",
"46.0.1",
"46.0.2",
"46.0.3",
"46.0.4"
]
}
],
"aliases": [
"CVE-2026-26007",
"GHSA-r6ph-v2qm-q3c2"
],
"details": "cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the public_key_from_numbers (or EllipticCurvePublicNumbers.public_key()), EllipticCurvePublicNumbers.public_key(), load_der_public_key() and load_pem_public_key() functions do not verify that the point belongs to the expected prime-order subgroup of the curve. This missing validation allows an attacker to provide a public key point P from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as S = [victim_private_key]P via ECDH, this leaks information about victim_private_key mod (small_subgroup_order). For curves with cofactor \u003e 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it\u0027s easy to forge signatures on the small subgroup. Only SECT curves are impacted by this. This vulnerability is fixed in 46.0.5.",
"id": "PYSEC-2026-2141",
"modified": "2026-07-13T05:48:25.183229Z",
"published": "2026-02-10T22:17:00.307Z",
"references": [
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-26007"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26007.json"
},
{
"type": "ADVISORY",
"url": "http://www.openwall.com/lists/oss-security/2026/02/10/4"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:10184"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:12176"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:13512"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:13545"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:13553"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:13672"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:19355"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:21431"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:21517"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:22330"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:22993"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:2694"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:5168"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:5665"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:6308"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:6309"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:6497"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:6567"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:6568"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:7295"
},
{
"type": "ADVISORY",
"url": "https://github.com/pyca/cryptography/security/advisories/GHSA-r6ph-v2qm-q3c2"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2438762"
},
{
"type": "FIX",
"url": "https://github.com/pyca/cryptography/commit/0eebb9dbb6343d9bc1d91e5a2482ed4e054a6d8c"
}
],
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
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Trend slope:
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(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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