High
openssl_encrypt before 1.4.9 Denial of Service via KDF
openssl_encrypt versions before 1.4.9 fail to enforce a time ceiling on key derivation function iteration counts specified in file metadata. Attackers can craft files with extremely high KDF iteration counts to consume CPU resources for unbounded periods before password verification occurs.
Announced Source revision 1
Original source ↗CVE-2026-81687
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-2026-81687
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": "1.4.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "1.4.9",
"versionType": "semver"
}
],
"packageURL": "pkg:pypi/openssl-encrypt",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-81687
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #5539 · Revision 1
- Added to Heist Feed
- Publisher date