openssl_encrypt before 1.4.0 Non-Standard PBKDF2 Key Derivation
openssl_encrypt versions before 1.4.0 use a non-standard PBKDF2 key derivation construction with iterations=1 per call in an outer loop, creating a KDF whose security properties have not been formally analyzed. Attackers can exploit this weakened key derivation to more efficiently crack passwords protecting legacy encrypted files compared to standard PBKDF2 implementations.
CVE-2026-74888
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-74888
openssl_encrypt
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "jahlives",
"product": "openssl_encrypt",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "1.4.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "1.4.0",
"versionType": "semver"
}
],
"packageURL": "pkg:pypi/openssl_encrypt",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-74888
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #5505 · Revision 1
- Added to Heist Feed
- Publisher date