CVE catalog
CVE-2026-41564
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
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.43% · Oct 27, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libcryptx-perl | sid | 0.091-1 | fixed |
| Debian | libcryptx-perl | forky | 0.091-1 | fixed |
| Debian | libcryptx-perl | trixie | 0.085-1+deb13u1 | fixed |
| Debian | libcryptx-perl | bookworm | 0.077-1 | vulnerable |
| Cpe | libcryptx-perl | Not reported | Not reported | vulnerable |
| Cpe | cryptx | Not reported | 0.088 | fixed |
| Alpine | perl-cryptx | 3.20 | 0.088-r0 | fixed |
| Alpine | perl-cryptx | 3.21 | 0.088-r0 | fixed |
| Alpine | perl-cryptx | 3.22 | 0.088-r0 | fixed |
| Alpine | perl-cryptx | 3.23 | 0.088-r0 | fixed |
| Alpine | perl-cryptx | 3.24 | 0.088-r0 | fixed |
| Opensuse | perl-CryptX | leap 16.0 | 0.89.0-bp160.1.1 | fixed |
| Opensuse | perl-CryptX | tumbleweed | 0.89.0-1.1 | fixed |
| Cpe | cryptx | Not reported | 0.088 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libcryptx-perl | source | sid | 0.087-2 | not yet assigned | Not reported | Not reported |
| Debian | libcryptx-perl | source | forky | 0.087-2 | not yet assigned | Not reported | Not reported |
| Debian | libcryptx-perl | source | trixie | 0.085-1+deb13u1 | not yet assigned | Not reported | Not reported |
| Debian | libcryptx-perl | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Cpe | cryptx | cpe | Not reported | 0.088 | Not reported | Not reported | Not reported |
| Alpine | perl-cryptx | apk | 3.20 | 0.088-r0 | Not reported | ALPINE-CVE-2026-41564 | Not reported |
| Alpine | perl-cryptx | apk | 3.21 | 0.088-r0 | Not reported | ALPINE-CVE-2026-41564 | Not reported |
| Alpine | perl-cryptx | apk | 3.22 | 0.088-r0 | Not reported | ALPINE-CVE-2026-41564 | Not reported |
| Alpine | perl-cryptx | apk | 3.23 | 0.088-r0 | Not reported | ALPINE-CVE-2026-41564 | Not reported |
| Alpine | perl-cryptx | apk | 3.24 | 0.088-r0 | Not reported | ALPINE-CVE-2026-41564 | Not reported |
| Opensuse | perl-CryptX | rpm | leap 16.0 | 0.89.0-bp160.1.1 | Not reported | OPENSUSE-SU-2026:20936-1 | Not reported |
| Opensuse | perl-CryptX | rpm | tumbleweed | 0.89.0-1.1 | Not reported | OPENSUSE-SU-2026:10773-1 | Not reported |
| Cpe | cryptx | cpe | Not reported | 0.088 | Not reported | NVD-CVE-2026-41564 | Not reported |
Notes
[bookworm] libcryptx-perl: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libcryptx-perl]Affected
Source package: [libcryptx-perl]
Details (2)
0.077-1+b1· amd64 · bookwormAffected
nvd · libcryptx-perl · debian · bookworm; nvd · libcryptx-perl · debian · 12
0.077-1+b1· arm64 · bookwormAffected
nvd · libcryptx-perl · debian · bookworm; nvd · libcryptx-perl · debian · 12
[Debian 13 (Trixie)]
- [libcryptx-perl]Fixed
Details (4)
0.085-1+deb13u1· amd64 · trixieFixed · Fixed:
0.085-1+deb13u1nvd · libcryptx-perl · debian · 13
0.085-1+deb13u1· arm64 · trixieFixed · Fixed:
0.085-1+deb13u1nvd · libcryptx-perl · debian · 13
0.090-1~bpo13+1· amd64 · trixie-backportsFixed · Fixed:
0.085-1+deb13u1nvd · libcryptx-perl · debian · 13
0.090-1~bpo13+1· arm64 · trixie-backportsFixed · Fixed:
0.085-1+deb13u1nvd · libcryptx-perl · debian · 13
[openSUSE Tumbleweed]
- [perl-CryptX]Fixed
Source package: [perl-CryptX]
Details (1)
0.91.0-1.1· x86_64 · tumbleweedFixed · Fixed:
0.89.0-1.1nvd · perl-CryptX · opensuse · tumbleweed
Observed:
References
- [http://www.openwall.com/lists/oss-security/2026/04/23/2]
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10773-1.json]
- [https://github.com/DCIT/perl-CryptX/commit/9a1dd3e0c27d68e32450be5538b864c2b115ee15.patch]
- [https://github.com/DCIT/perl-CryptX/security/advisories/GHSA-24c2-gp6c-24c6]
- [https://metacpan.org/release/MIK/CryptX-0.088]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-41564]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-41564]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-41564]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10773-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:20936-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-41564]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41564.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]