CVE catalog
CVE-2026-58101
Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference. X509V3_EXT_d2i(ext) returns NULL when an extension's DER value fails to parse. basicC, ia5str
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.31% · Oct 25, 2026
Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference. X509V3_EXT_d2i(ext) returns NULL when an extension's DER value fails to parse. basicC, ia5string, and auth_att dereference its result without a NULL check. keyid_data also dereferences akid->keyid, which is NULL for an empty AKI SEQUENCE (DER 30 00) even when the parse succeeds. A caller invoking an affected helper on an extension from an untrusted certificate triggers a SIGSEGV that crashes the Perl 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 | libcrypt-openssl-x509-perl | sid | 2.1.5-1 | fixed |
| Debian | libcrypt-openssl-x509-perl | forky | 2.1.5-1 | fixed |
| Debian | libcrypt-openssl-x509-perl | trixie | 2.0.1-1 | vulnerable |
| Debian | libcrypt-openssl-x509-perl | bookworm | 1.9.14-2 | vulnerable |
| Cpe | libcrypt-openssl-x509-perl | Not reported | Not reported | vulnerable |
| Cpe | crypt\ | Not reported | 2.1.3 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libcrypt-openssl-x509-perl | source | sid | 2.1.3-1 | not yet assigned | Not reported | [1142034] |
| Debian | libcrypt-openssl-x509-perl | source | forky | 2.1.3-1 | not yet assigned | Not reported | [1142034] |
| Debian | libcrypt-openssl-x509-perl | source | trixie | (unfixed) | not yet assigned | Not reported | [1142034] |
| Debian | libcrypt-openssl-x509-perl | source | bookworm | (unfixed) | not yet assigned | Not reported | [1142034] |
| Cpe | crypt\ | cpe | Not reported | 2.1.3 | Not reported | NVD-CVE-2026-58101 | Not reported |
Notes
[trixie] libcrypt-openssl-x509-perl: Minor issue [bookworm] libcrypt-openssl-x509-perl: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libcrypt-openssl-x509-perl]Affected
Source package: [libcrypt-openssl-x509-perl]
Details (2)
1.9.14-2+b1· amd64 · bookwormAffected
nvd · libcrypt-openssl-x509-perl · debian · bookworm; nvd · libcrypt-openssl-x509-perl · debian · 12
1.9.14-2+b1· arm64 · bookwormAffected
nvd · libcrypt-openssl-x509-perl · debian · bookworm; nvd · libcrypt-openssl-x509-perl · debian · 12
[Debian 13 (Trixie)]
- [libcrypt-openssl-x509-perl]Affected
Source package: [libcrypt-openssl-x509-perl]
Details (2)
2.0.1-1+b1· amd64 · trixieAffected
nvd · libcrypt-openssl-x509-perl · debian · 13
2.0.1-1+b1· arm64 · trixieAffected
nvd · libcrypt-openssl-x509-perl · debian · 13
Observed:
References
- [https://github.com/dsully/perl-crypt-openssl-x509/commit/4c1e2370556097c253ae27abe9e1097ea377fbd2.patch]
- [https://metacpan.org/release/JONASBN/Crypt-OpenSSL-X509-2.1.3/source/Changes.md]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-58101]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-58101]
- [https://security-tracker.debian.org/tracker/CVE-2026-58101]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-58101.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]