EUVD-2026-94104
GHSA-99hr-wq4p-x49q
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Requires local control of an attacker-influenced ssh command-line username (AV:L, PR:L) under narrow conditions (AC:H), yielding only limited integrity injection with no confidentiality or availability impact.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line username, leading to injection.
AnalysisAI
The OpenSSH ssh client before 10.6 does not correctly neutralize '$' or '\' characters when they appear in a command-line username, so those characters can be interpreted as having special meaning instead of being treated as literal username data, resulting in injection into the resource identifier derived from the username. Exploitation requires an attacker to influence the username value passed to an ssh invocation - typically a scripted or automated call consuming untrusted input - and, consistent with the assessed CVSS 3.1 vector (AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N, score 2.5), the impact is limited to low integrity with no confidentiality or availability effect. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
No credit card · 7-day full trial
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the OpenSSH ssh client be invoked with a command-line username that an attacker can influence and that contains a '$' or '\' character - typically a scripted or automated ssh invocation consuming untrusted username input. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a low-priority issue, consistent across the available signals. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade to OpenSSH 10.6 or later, which is documented in the release notes at https://www.openssh.org/releasenotes.html#10.6. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which
GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, whi
GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of
freeSSHd.exe in freeSSHd through 1.2.6 allows remote attackers to bypass authentication via a crafted session, as demons
GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, whi
OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. Rated medium se
sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static
The kbdint_next_device function in auth2-chall.c in sshd in OpenSSH through 6.9 does not properly restrict the processin
The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password a
Remote code execution in OpenSSH's sshd server (regression of CVE-2006-5051) allows unauthenticated remote attackers to
The SSH USERAUTH CHANGE REQUEST feature in SSH Tectia Server 6.0.4 through 6.0.20, 6.1.0 through 6.1.12, 6.2.0 through 6
A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. Rated medium severity (CVSS 6.8), this
Same technique Code Injection
View allShare
External POC / Exploit Code
Leaving vuln.today