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BREW-ANSIBLE@10-CVE-2026-39892 (GHSA-P423-J2CM-9VMQ)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:35 – Updated: 2026-11-05 09:43 – Source website
VLAI
Summary
Cryptography vulnerable to buffer overflow if non-contiguous buffers were passed to APIs
Details
If a non-contiguous buffer was passed to APIs which accepted Python buffers (e.g. Hash.update()), this could lead to buffer overflows. For example:
h = Hash(SHA256())
b.update(buf[::-1])
would read past the end of the buffer on Python >3.11
Severity
9.8 (Critical)
References
{
"affected": [
{
"ecosystem_specific": {
"fix": null,
"range_state": "affected",
"resource": "cryptography",
"resource_purl": "pkg:pypi/cryptography@46.0.3",
"upstream_fixed_in": "46.0.7"
},
"package": {
"ecosystem": "Homebrew",
"name": "ansible@10",
"purl": "pkg:brew/ansible%4010"
},
"ranges": [
{
"events": [
{
"introduced": "10.7.0_4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/cryptography@46.0.3",
"name": "cryptography",
"resource": "cryptography",
"strategy": "registry",
"subject_version": "46.0.3"
}
]
},
"details": "If a non-contiguous buffer was passed to APIs which accepted Python buffers (e.g. `Hash.update()`), this could lead to buffer overflows. For example:\n\n```python\nh = Hash(SHA256())\nb.update(buf[::-1])\n```\n\nwould read past the end of the buffer on Python \u003e3.11",
"id": "BREW-ansible@10-CVE-2026-39892",
"modified": "2026-11-05T09:43:04Z",
"published": "2026-08-13T16:35:22Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39892"
},
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/commit/c09d38ae52de7d95fe683b7a7c496f5751616f27"
},
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/commit/622d672e429a7cff836a23c5903683dbec1901f5"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:43651"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:43670"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:43851"
},
{
"type": "WEB",
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{
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},
{
"type": "WEB",
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},
{
"type": "WEB",
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},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:7295"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-39892"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456735"
},
{
"type": "PACKAGE",
"url": "https://github.com/pyca/cryptography"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2026-36.yaml"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39892.json"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:19375"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:20338"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:21017"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22465"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22629"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22840"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:23361"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:24483"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:24761"
},
{
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"url": "https://access.redhat.com/errata/RHSA-2026:24762"
},
{
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},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:24866"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:24977"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:30088"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:30089"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:37275"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:42644"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/04/08/12"
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],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Cryptography vulnerable to buffer overflow if non-contiguous buffers were passed to APIs",
"upstream": [
"GHSA-p423-j2cm-9vmq",
"CVE-2026-39892",
"PYSEC-2026-36"
]
}
CVE-2026-39892 (GCVE-0-2026-39892)
Vulnerability from cvelistv5 – Published: 2026-04-08 20:49 – Updated: 2026-11-04 03:18
VLAI
EPSS
VEX
Title
cryptography has a buffer overflow if non-contiguous buffers were passed to APIs
Summary
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. From 45.0.0 to before 46.0.7, if a non-contiguous buffer was passed to APIs which accepted Python buffers (e.g. Hash.update()), this could lead to buffer overflows. This vulnerability is fixed in 46.0.7.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-09 19:41 UTC
CWE
Assigner
References
33 references
| URL | Tags |
|---|---|
| https://github.com/pyca/cryptography/security/adv… | x_refsource_CONFIRM |
| https://github.com/pyca/cryptography/commit/622d6… | x_refsource_MISC |
| https://github.com/pyca/cryptography/commit/c09d3… | x_refsource_MISC |
| https://github.com/pypa/advisory-database/tree/ma… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2026/0… | |
| https://access.redhat.com/security/cve/CVE-2026-39892 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2456735 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:24761 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24762 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:30089 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:30088 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24866 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:20338 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:43855 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:43854 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:43851 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:43670 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:43853 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:43651 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:46956 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7295 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:42644 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24977 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:37275 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22840 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22629 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:21017 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24853 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:19375 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22465 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:23361 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24483 | vendor-advisoryx_refsource_REDHAT |
Impacted products
49 products
| Vendor | Product | Version | |
|---|---|---|---|
| pyca | cryptography |
Affected:
>= 45.0.0, < 46.0.7
|
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 |
Unaffected:
0:4.6.29-2.el8ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 |
Unaffected:
0:46.0.7-1.el8ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 |
Unaffected:
0:4.6.29-2.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 |
Unaffected:
0:46.0.7-1.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 9 |
Unaffected:
0:4.7.12-1.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 9 |
Unaffected:
0:46.0.7-1.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat AI Inference Server 3.3 |
Unaffected:
1782353093 , < *
(rpm)
cpe:/a:redhat:ai_inference_server:3.3::el9 |
|
| Red Hat | Red Hat AI Inference Server 3.3 |
Unaffected:
1782352847 , < *
(rpm)
cpe:/a:redhat:ai_inference_server:3.3::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1779762270 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1779759716 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1779734628 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1779773804 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1779761061 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1779760844 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Discovery 2 |
Unaffected:
1779395228 , < *
(rpm)
cpe:/a:redhat:discovery:2::el9 |
|
| Red Hat | Red Hat Enterprise Linux AI 3.3 |
Unaffected:
1784670204 , < *
(rpm)
cpe:/a:redhat:enterprise_linux_ai:3.3::el9 |
|
| Red Hat | Red Hat Enterprise Linux AI 3.3 |
Unaffected:
1784669680 , < *
(rpm)
cpe:/a:redhat:enterprise_linux_ai:3.3::el9 |
|
| Red Hat | Red Hat Enterprise Linux AI 3.3 |
Unaffected:
1784736822 , < *
(rpm)
cpe:/a:redhat:enterprise_linux_ai:3.3::el9 |
|
| Red Hat | Red Hat Enterprise Linux AI 3.3 |
Unaffected:
1784736941 , < *
(rpm)
cpe:/a:redhat:enterprise_linux_ai:3.3::el9 |
|
| Red Hat | Red Hat Enterprise Linux AI 3.3 |
Unaffected:
1784736798 , < *
(rpm)
cpe:/a:redhat:enterprise_linux_ai:3.3::el9 |
|
| Red Hat | Red Hat Enterprise Linux AI 3.3 |
Unaffected:
1784736857 , < *
(rpm)
cpe:/a:redhat:enterprise_linux_ai:3.3::el9 |
|
| Red Hat | Red Hat Enterprise Linux AI 3.3 |
Unaffected:
1785163184 , < *
(rpm)
cpe:/a:redhat:enterprise_linux_ai:3.3::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:
1780069069 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783701598 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471587 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782472374 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471606 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat Quay 3.10 |
Unaffected:
1779822261 , < *
(rpm)
cpe:/a:redhat:quay:3.10::el8 |
|
| Red Hat | Red Hat Quay 3.12 |
Unaffected:
1779811412 , < *
(rpm)
cpe:/a:redhat:quay:3.12::el8 |
|
| Red Hat | Red Hat Quay 3.14 |
Unaffected:
1779689392 , < *
(rpm)
cpe:/a:redhat:quay:3.14::el8 |
|
| Red Hat | Red Hat Quay 3.15 |
Unaffected:
1780891395 , < *
(rpm)
cpe:/a:redhat:quay:3.15::el8 |
|
| Red Hat | Red Hat Quay 3.16 |
Unaffected:
1779204086 , < *
(rpm)
cpe:/a:redhat:quay:3.16::el9 |
|
| Red Hat | Red Hat Quay 3.17 |
Unaffected:
1779922205 , < *
(rpm)
cpe:/a:redhat:quay:3.17::el9 |
|
| Red Hat | Red Hat Quay 3.9 |
Unaffected:
1779811473 , < *
(rpm)
cpe:/a:redhat:quay:3.9::el8 |
|
| Red Hat | Red Hat Trusted Artifact Signer 1.4 |
Unaffected:
1780914886 , < *
(rpm)
cpe:/a:redhat:trusted_artifact_signer:1.4::el9 |
|
| Red Hat | Lightspeed Core |
cpe:/a:redhat:lightspeed_core
|
|
| Red Hat | Migration Toolkit for Applications 8 |
cpe:/a:redhat:migration_toolkit_applications:8
|
|
| Red Hat | OpenShift Lightspeed |
cpe:/a:redhat:openshift_lightspeed
|
|
| Red Hat | Red Hat AI Inference Server |
cpe:/a:redhat:ai_inference_server:3
|
|
| 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 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 |
cpe:/a:redhat:enterprise_linux_ai:3
|
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai
|
|
| Red Hat | Red Hat Quay 3 |
cpe:/a:redhat:quay:3
|
|
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6
|
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"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-119",
"description": "CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-11-04T03:18:10.286Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq"
},
{
"name": "https://github.com/pyca/cryptography/commit/622d672e429a7cff836a23c5903683dbec1901f5",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/pyca/cryptography/commit/622d672e429a7cff836a23c5903683dbec1901f5"
},
{
"name": "https://github.com/pyca/cryptography/commit/c09d38ae52de7d95fe683b7a7c496f5751616f27",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/pyca/cryptography/commit/c09d38ae52de7d95fe683b7a7c496f5751616f27"
},
{
"name": "https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2026-36.yaml",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2026-36.yaml"
}
],
"source": {
"advisory": "GHSA-p423-j2cm-9vmq",
"discovery": "UNKNOWN"
},
"title": "cryptography has a buffer overflow if non-contiguous buffers were passed to APIs"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-39892",
"datePublished": "2026-04-08T20:49:41.967Z",
"dateReserved": "2026-04-07T20:32:03.011Z",
"dateUpdated": "2026-11-04T03:18:10.286Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
GHSA-P423-J2CM-9VMQ
Vulnerability from github – Published: 2026-04-08 19:23 – Updated: 2026-11-04 03:16
VLAI
Summary
Cryptography vulnerable to buffer overflow if non-contiguous buffers were passed to APIs
Details
If a non-contiguous buffer was passed to APIs which accepted Python buffers (e.g. Hash.update()), this could lead to buffer overflows. For example:
h = Hash(SHA256())
b.update(buf[::-1])
would read past the end of the buffer on Python >3.11
Severity
9.8 (Critical)
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "cryptography"
},
"ranges": [
{
"events": [
{
"introduced": "45.0.0"
},
{
"fixed": "46.0.7"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-39892"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-131"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-08T19:23:08Z",
"nvd_published_at": "2026-04-08T21:17:01Z",
"severity": "MODERATE"
},
"details": "If a non-contiguous buffer was passed to APIs which accepted Python buffers (e.g. `Hash.update()`), this could lead to buffer overflows. For example:\n\n```python\nh = Hash(SHA256())\nb.update(buf[::-1])\n```\n\nwould read past the end of the buffer on Python \u003e3.11",
"id": "GHSA-p423-j2cm-9vmq",
"modified": "2026-11-04T03:16:29Z",
"published": "2026-04-08T19:23:08Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39892"
},
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/commit/c09d38ae52de7d95fe683b7a7c496f5751616f27"
},
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/commit/622d672e429a7cff836a23c5903683dbec1901f5"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:43651"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:43670"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:43851"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:43853"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:43854"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:43855"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:46956"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:7295"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-39892"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456735"
},
{
"type": "PACKAGE",
"url": "https://github.com/pyca/cryptography"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2026-36.yaml"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39892.json"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:19375"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:20338"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:21017"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22465"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22629"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22840"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:23361"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:24483"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:24761"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:24762"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:24853"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:24866"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:24977"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:30088"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:30089"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:37275"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:42644"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/04/08/12"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Cryptography vulnerable to buffer overflow if non-contiguous buffers were passed to APIs"
}
PYSEC-2026-36
Vulnerability from pysec - Published: 2026-04-08 21:17 - Updated: 2026-05-20 09:18
VLAI
Details
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. From 45.0.0 to before 46.0.7, if a non-contiguous buffer was passed to APIs which accepted Python buffers (e.g. Hash.update()), this could lead to buffer overflows. This vulnerability is fixed in 46.0.7.
Severity
9.8 (Critical)
Impacted products
| Name | purl | cryptography | pkg:pypi/cryptography |
|---|
Aliases
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "cryptography",
"purl": "pkg:pypi/cryptography"
},
"ranges": [
{
"events": [
{
"introduced": "45.0.0"
},
{
"fixed": "46.0.7"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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",
"46.0.5",
"46.0.6"
]
}
],
"aliases": [
"CVE-2026-39892",
"GHSA-p423-j2cm-9vmq"
],
"details": "cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. From 45.0.0 to before 46.0.7, if a non-contiguous buffer was passed to APIs which accepted Python buffers (e.g. Hash.update()), this could lead to buffer overflows. This vulnerability is fixed in 46.0.7.",
"id": "PYSEC-2026-36",
"modified": "2026-05-20T09:18:55.965312Z",
"published": "2026-04-08T21:17:01.547Z",
"references": [
{
"type": "ADVISORY",
"url": "http://www.openwall.com/lists/oss-security/2026/04/08/12"
},
{
"type": "ADVISORY",
"url": "https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq"
}
],
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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Show additional events:
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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.
Vulnerability timeline
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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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