OESA-2026-3459
- Source
- https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3459
- Import Source
- https://repo.openeuler.org/security/data/osv/OESA-2026-3459.json
- JSON Data
- https://api.osv.dev/v1/vulns/OESA-2026-3459
- Upstream
- Published
- 2026-08-20T10:00:05Z
- Modified
- 2026-08-20T10:15:04.960948522Z
- Severity
-
- 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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 CVSS Calculator
- Summary
- python-cryptography security update
- Details
-
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers.
Security Fix(es):
python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 49.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents unbounded recursion and guarantees termination, an attacker-controlled certificate chain can lead the processing to easily take more than 5s to reject in testing. This amplification could form the basis for a resource exhaustion denial of service attack. The core issue arises in the recursive nature of buildchaininner, which does not de-duplicate against previously analyzed candidates. As the correctness of validation is not affected, the integrity of a system cannot be compromised through this vector, only its availability. This issue is fixed in 49.0.0.(CVE-2026-69249)
- Database specific
{ "severity": "High" }- References
Affected packages
openEuler:24.03-LTS-SP1 / python-cryptography
Package
- Name
- python-cryptography
- Purl
- pkg:rpm/openEuler/python-cryptography&distro=openEuler-24.03-LTS-SP1
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed42.0.2-10.oe2403sp1
Ecosystem specific
{
"src": [
"python-cryptography-42.0.2-10.oe2403sp1.src.rpm"
],
"x86_64": [
"python-cryptography-debuginfo-42.0.2-10.oe2403sp1.x86_64.rpm",
"python-cryptography-debugsource-42.0.2-10.oe2403sp1.x86_64.rpm",
"python3-cryptography-42.0.2-10.oe2403sp1.x86_64.rpm"
],
"noarch": [
"python-cryptography-help-42.0.2-10.oe2403sp1.noarch.rpm"
],
"aarch64": [
"python-cryptography-debuginfo-42.0.2-10.oe2403sp1.aarch64.rpm",
"python-cryptography-debugsource-42.0.2-10.oe2403sp1.aarch64.rpm",
"python3-cryptography-42.0.2-10.oe2403sp1.aarch64.rpm"
]
}