Vulnerability · Published Apr 2, 2026 · Assigned by mitre
CVE-2026-35387
Low 3.1
In plain English
A low-severity security flaw in OpenSSH from OpenBSD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.1Low
Exploit odds (30 days)0.2%top 84.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | openssh | 9.9p1-23.el10_2.alma.1 | ALSA-2026:19069 |
| AlmaLinux:10 | openssh | 9.9p1-14.el10_1.alma.1 | ALSA-2026:13380 |
| AlmaLinux:8 | openssh | 8.0p1-29.el8_10 | ALSA-2026:13383 |
| AlmaLinux:9 | openssh | 8.7p1-49.el9_7.alma.1 | ALSA-2026:13381 |
| AlmaLinux:9 | openssh | 9.9p1-7.el9_8.alma.1 | ALSA-2026:19219 |
| AlmaLinux:10 | openssh-askpass | 9.9p1-23.el10_2.alma.1 | ALSA-2026:19069 |
| AlmaLinux:10 | openssh-askpass | 9.9p1-14.el10_1.alma.1 | ALSA-2026:13380 |
| AlmaLinux:8 | openssh-askpass | 8.0p1-29.el8_10 | ALSA-2026:13383 |
| AlmaLinux:9 | openssh-askpass | 9.9p1-7.el9_8.alma.1 | ALSA-2026:19219 |
| AlmaLinux:9 | openssh-askpass | 8.7p1-49.el9_7.alma.1 | ALSA-2026:13381 |
| AlmaLinux:8 | openssh-cavs | 8.0p1-29.el8_10 | ALSA-2026:13383 |
| AlmaLinux:10 | openssh-clients | 9.9p1-23.el10_2.alma.1 | ALSA-2026:19069 |
| AlmaLinux:10 | openssh-clients | 9.9p1-14.el10_1.alma.1 | ALSA-2026:13380 |
| AlmaLinux:8 | openssh-clients | 8.0p1-29.el8_10 | ALSA-2026:13383 |
| AlmaLinux:9 | openssh-clients | 8.7p1-49.el9_7.alma.1 | ALSA-2026:13381 |
| AlmaLinux:9 | openssh-clients | 9.9p1-7.el9_8.alma.1 | ALSA-2026:19219 |
| AlmaLinux:10 | openssh-keycat | 9.9p1-23.el10_2.alma.1 | ALSA-2026:19069 |
| AlmaLinux:10 | openssh-keycat | 9.9p1-14.el10_1.alma.1 | ALSA-2026:13380 |
| AlmaLinux:8 | openssh-keycat | 8.0p1-29.el8_10 | ALSA-2026:13383 |
| AlmaLinux:9 | openssh-keycat | 9.9p1-7.el9_8.alma.1 | ALSA-2026:19219 |
| AlmaLinux:9 | openssh-keycat | 8.7p1-49.el9_7.alma.1 | ALSA-2026:13381 |
| AlmaLinux:10 | openssh-keysign | 9.9p1-14.el10_1.alma.1 | ALSA-2026:13380 |
| AlmaLinux:10 | openssh-keysign | 9.9p1-23.el10_2.alma.1 | ALSA-2026:19069 |
| AlmaLinux:8 | openssh-ldap | 8.0p1-29.el8_10 | ALSA-2026:13383 |
| AlmaLinux:10 | openssh-server | 9.9p1-14.el10_1.alma.1 | ALSA-2026:13380 |
| AlmaLinux:10 | openssh-server | 9.9p1-23.el10_2.alma.1 | ALSA-2026:19069 |
| AlmaLinux:8 | openssh-server | 8.0p1-29.el8_10 | ALSA-2026:13383 |
| AlmaLinux:9 | openssh-server | 8.7p1-49.el9_7.alma.1 | ALSA-2026:13381 |
| AlmaLinux:9 | openssh-server | 9.9p1-7.el9_8.alma.1 | ALSA-2026:19219 |
| AlmaLinux:8 | pam_ssh_agent_auth | 0.10.3-7.29.el8_10 | ALSA-2026:13383 |
| AlmaLinux:9 | pam_ssh_agent_auth | 0.10.4-5.49.el9_7.alma.1 | ALSA-2026:13381 |
| AlmaLinux:9 | pam_ssh_agent_auth | 0.10.4-7.7.el9_8.alma.1 | ALSA-2026:19219 |
| Debian:12 | openssh | 1:9.2p1-2+deb12u10 | DEBIAN-CVE-2026-35387 |
| Debian:13 | openssh | 1:10.0p1-7+deb13u3 | DEBIAN-CVE-2026-35387 |
| Debian:14 | openssh | 1:10.3p1-1 | DEBIAN-CVE-2026-35387 |
| Rocky Linux:10 | openssh | 0:9.9p1-14.el10_1.rocky.0.1 | RLSA-2026:13380 |
| Rocky Linux:10 | openssh | 0:9.9p1-23.el10_2.rocky.0.1 | RLSA-2026:19069 |
| Rocky Linux:8 | openssh | 0:8.0p1-29.el8_10 | RLSA-2026:13383 |
| Rocky Linux:9 | openssh | 0:8.7p1-49.el9_7.rocky.0.1 | RLSA-2026:13381 |
| Rocky Linux:9 | openssh | 0:9.9p1-7.el9_8.rocky.0.1 | RLSA-2026:19219 |
| Ubuntu:22.04:LTS | openssh | 1:8.9p1-3ubuntu0.15 | UBUNTU-CVE-2026-35387 |
| Ubuntu:24.04:LTS | openssh | 1:9.6p1-3ubuntu13.16 | UBUNTU-CVE-2026-35387 |
| Ubuntu:25.10 | openssh | 1:10.0p1-5ubuntu5.4 | UBUNTU-CVE-2026-35387 |
| Ubuntu:26.04:LTS | openssh | 1:10.2p1-2ubuntu3.2 | UBUNTU-CVE-2026-35387 |
| Ubuntu:22.04:LTS | openssh-ssh1 | no fix listed | UBUNTU-CVE-2026-35387 |
| Ubuntu:24.04:LTS | openssh-ssh1 | no fix listed | UBUNTU-CVE-2026-35387 |
| Ubuntu:25.10 | openssh-ssh1 | no fix listed | UBUNTU-CVE-2026-35387 |
| Ubuntu:26.04:LTS | openssh-ssh1 | no fix listed | UBUNTU-CVE-2026-35387 |
| Ubuntu:26.10 | openssh-ssh1 | no fix listed | UBUNTU-CVE-2026-35387 |
Affected products (as reported)
Weakness: CWE-670 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N