CVE catalog
CVE-2026-5194
Missing hash/digest size and OID checks allow digests smaller than allowed when verifying ECDSA certificates, or smaller than is appropriate for the relevant key type, to be accepted by signature veri
- Severity
- Critical · CVSS 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.57% · Oct 25, 2026
Missing hash/digest size and OID checks allow digests smaller than allowed when verifying ECDSA certificates, or smaller than is appropriate for the relevant key type, to be accepted by signature verification functions. This could lead to reduced security of ECDSA certificate-based authentication if the public CA key used is also known. This affects ECDSA/ECC verification when EdDSA or ML-DSA is also enabled.
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 | wolfssl | sid | 5.9.2-1.2 | fixed |
| Debian | wolfssl | trixie | 5.7.2-0.1+deb13u2 | fixed |
| Debian | wolfssl | bookworm | 5.5.4-2+deb12u2 | vulnerable |
| Debian | wolfssl | bookworm-security | 5.5.4-2+deb12u3 | fixed |
| Cpe | wolfssl | Not reported | Not reported | vulnerable |
| Cpe | wolfssl | Not reported | 5.9.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | wolfssl | source | sid | 5.9.1-0.1 | not yet assigned | Not reported | [1133835] |
| Debian | wolfssl | source | trixie | 5.7.2-0.1+deb13u2 | not yet assigned | Not reported | [1133835] |
| Debian | wolfssl | source | bookworm | 5.5.4-2+deb12u3 | not yet assigned | Not reported | [1133835] |
| Cpe | wolfssl | cpe | Not reported | 5.9.1 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libwolfssl35]Affected
Source package: [wolfssl]
Details (4)
5.5.4-2+deb12u2· amd64 · bookwormAffected · Fixed:
5.5.4-2+deb12u3nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12
5.5.4-2+deb12u2· arm64 · bookwormAffected · Fixed:
5.5.4-2+deb12u3nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12
5.5.4-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
5.5.4-2+deb12u3nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12
5.5.4-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
5.5.4-2+deb12u3nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12
- [libwolfssl-dev]Affected
Source package: [wolfssl]
Details (4)
5.5.4-2+deb12u2· amd64 · bookwormAffected · Fixed:
5.5.4-2+deb12u3nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12
5.5.4-2+deb12u2· arm64 · bookwormAffected · Fixed:
5.5.4-2+deb12u3nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12
5.5.4-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
5.5.4-2+deb12u3nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12
5.5.4-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
5.5.4-2+deb12u3nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12
[Debian 13 (Trixie)]
- [libwolfssl42t64]Affected
Source package: [wolfssl]
Details (2)
5.7.2-0.1+deb13u1· amd64 · trixieAffected · Fixed:
5.7.2-0.1+deb13u2nvd · wolfssl · debian · 13
5.7.2-0.1+deb13u1· arm64 · trixieAffected · Fixed:
5.7.2-0.1+deb13u2nvd · wolfssl · debian · 13
- [libwolfssl-dev]Affected
Source package: [wolfssl]
Details (2)
5.7.2-0.1+deb13u1· amd64 · trixieAffected · Fixed:
5.7.2-0.1+deb13u2nvd · wolfssl · debian · 13
5.7.2-0.1+deb13u1· arm64 · trixieAffected · Fixed:
5.7.2-0.1+deb13u2nvd · wolfssl · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-5194]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-5194]
- [https://security-tracker.debian.org/tracker/CVE-2026-5194]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5194.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]