PYSEC-2026-3803
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/openssl-encrypt/PYSEC-2026-3803.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-3803
- Aliases
-
- CVE-2026-81721
- GHSA-7894-5gw8-69hr
- Published
- 2026-08-27T17:21:02Z
- Modified
- 2026-09-03T11:00:04Z
- 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
- [none]
- Details
-
openssl_encrypt before 1.4.9 fails to validate KDF cost parameters in encrypted file metadata and keystore headers, allowing attackers to trigger unbounded memory allocation. Attackers can craft malicious encrypted files declaring arbitrarily large Argon2, scrypt, or balloon KDF parameters to exhaust system memory and crash the process without authentication.
- References
Affected packages
PyPI / openssl-encrypt
Package
- Name
- openssl-encrypt
- View open source insights on deps.dev
- Purl
- pkg:pypi/openssl-encrypt
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed1.4.9
Affected versions
0.*
0.2.2
0.2.3
0.2.4
0.2.5
0.2.6
0.3.0
0.3.1
0.3.2
0.3.3
0.4.0
0.4.1
0.4.2
0.4.3
0.4.4
0.5.0
0.5.1
0.5.3
0.6.0rc1
0.7.0rc2
0.7.1
0.7.2
0.8.0
0.8.1
0.8.2
0.9.2
1.*
1.0.0
1.0.1
1.0.2
1.0.3
1.1.0
1.2.0
1.2.1
1.3.0
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
1.4.0b3
1.4.0b4
1.4.0b5
1.4.0b6
1.4.0b7
1.4.0b8
1.4.0
1.4.1rc2
1.4.1
1.4.2
1.4.4
1.4.5
1.4.6
1.4.7
1.4.8