CVE-2026-41564
High · 7.5CVSS
7.5
EPSS
0.5%
Published
Apr 23, 2026
CISA due date
—
The record
CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking. The Crypt::PK::RSA, Crypt::PK::DSA, Crypt::PK::DH, Crypt::PK::ECC, Crypt::PK::Ed25519 and Crypt::PK::X25519 modules seed a per-object PRNG state in their constructors and reuse it without fork detection. A Crypt::PK::* object created before `fork()` shares byte-identical PRNG state with every child process, and any randomized operation they perform can produce identical output, including key generation. Two ECDSA or DSA signatures from different processes are enough to recover the signing private key through nonce-reuse key recovery. This affects preforking services such as the Starman web server, where a Crypt::PK::* object loaded at startup is inherited by every worker process.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| openSUSE:Leap 16.0 | perl-CryptX | 0 | 0.89.0-bp160.1.1 |
| openSUSE:Tumbleweed | perl-CryptX | 0 | 0.89.0-1.1 |
Related vulnerabilities
- CVE-2026-41565 CryptX versions before 0.088_001 for Perl have a stack buffer overflow in four AEAD… Also affects perl-CryptX
- CVE-2026-11625 Bytes::Random::Secure versions through 0.29 for Perl share internal state across forked… CWE-335
- CVE-2026-11702 Bytes::Random::Secure::Tiny versions through 1.011 for Perl share internal state across… CWE-335
- CVE-2026-25835 Mbed TLS before 3.6.6 and TF-PSA-Crypto before 1.1.0 misuse seeds in a Pseudo-Random… CWE-335
- CVE-2026-3503 Protection mechanism failure in wolfCrypt post-quantum implementations (ML-KEM and… CWE-335
- CVE-2025-52578 Incorrect Usage of Seeds in Pseudo-Random Number Generator (CWE- 335) vulnerability in… CWE-335
- CVE-2024-55566 ColPack 1.0.10 through 9a7293a has a predictable temporary file (located under /tmp with… CWE-335
- CVE-2024-36048 QAbstractOAuth in Qt Network Authorization in Qt before 5.15.17, 6.x before 6.2.13, 6.3.x… CWE-335