CVE-2023-51385
A public proof of concept exists; no exploitation attested.
- Published2023-12-18
- WeaknessCWE-78
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host name has shell metacharacters, and this name is referenced by an expansion token in certain situations. For example, an untrusted Git repository can have a submodule with shell metacharacters in a user name or host name.
Timeline
dates in UTC- 2023-12-1819:15CVE publishedNVD
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-51385?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-51385?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 10.0 | = 10.0 | no fix published | NVD |
| 11.0 | = 11.0 | no fix published | NVD |
| 12.0 | = 12.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 9.6 | < 9.6 | 9.6 | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- opensshAlmaLinux:9all versions · fixed in 8.7p1-34.el9_3.3and 4 other packages
- opensshAlmaLinux:8all versions · fixed in 8.0p1-19.el8_9.2and 6 other packages
- pam_ssh_agent_authAlmaLinux:9all versions · fixed in 0.10.4-5.34.el9_3.3
- pam_ssh_agent_authAlmaLinux:8all versions · fixed in 0.10.3-7.19.el8_9.2
Fix
Advisories and patches
- github.comPatch
- www.openssh.comRelease Notes
- www.openwall.comRelease Notes
Detection
read 2026-10-23 19:23 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- 20 repositories, unverifiedvin01/poc-proxycommand-vulnerableFeatherStark/CVE-2023-51385watarium/poc-cve-2023-51385Le1a/CVE-2023-51385LtmThink/CVE-2023-51385_test PoC-in-GitHub
Sources
- CISA-ADPSSVC decisionpoc2025-08-15
- OpenCVESSVC decisionpoc—
- CISA-ADPCVSS 3.16.52025-12-18
- NVDCVSS 3.16.5read 2026-10-23
- CISA-ADPweakness (CWE)CWE-782025-12-18
- NVDweakness (CWE)CWE-78read 2026-10-23
- FIRST EPSSEPSS score19.8 %read 2026-10-23
- PoC-in-GitHubproof of concept20read 2026-10-23
- OSVaffected packages—
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Published
- 2023-12-18
- Last Modified
- 2026-10-15
- NVD status
- Modified
Frequently asked questions
What is CVE-2023-51385?
Is CVE-2023-51385 actively exploited?
What is the CVSS score for CVE-2023-51385?
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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.