Rex versions through 1.16.1 for Perl accept an unknown SSH host key for remote rsync transfers because sync hardcodes StrictHostKeyChecking=no
CVSS score
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EPSS probability
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Risk score
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Published
4 h ago
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
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Source agreement
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Evidence confidence
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Short explanation
Rex versions through 1.16.1 for Perl accept unknown SSH host keys for remote rsync transfers because sync hardcodes StrictHostKeyChecking=no. This flaw can lead to credential and data compromise if connections are redirected.
This vulnerability allows attackers to intercept sensitive passwords and data by redirecting network traffic. The patch status remains unverified, and official advisories should be monitored.
What should be done?
- Monitor vendor advisories for updates
- Inspect network traffic for potential man-in-the-middle risks
- Evaluate alternative secure transfer methods where applicable
Chain of evidence and sources
Rex 1.16.1 ve önceki sürümleri, rsync aktarımlarında StrictHostKeyChecking=no parametresini sabit kodlar.
Saldırganlar, bağlantıyı gerçek anahtar bilinmeden önce yönlendirerek kimlik doğrulama parolasını ve verileri ele geçirebilir.
İncelenen resmî kaynaklarda yama durumu doğrulanamamıştır.
Show the technical text from the sources
Rex versions through 1.16.1 for Perl accept an unknown SSH host key for remote rsync transfers because sync hardcodes StrictHostKeyChecking=no. Every remote branch of sync builds its ssh command with that option, for password authentication, for private-key authentication and for the fallback. The ssh options a caller sets through set_openssh_opt reach the OpenSSH transport but not this command, so there is no configuration that restores host key checking for the transfer. An attacker who can redirect the connection before the real host key is known presents their own and the transfer proceeds: under password authentication sync sends the connection password to that server, an upload writes the selected local files to it, and a download writes what it returns to the local destination.
CWE: CWE-322
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-94140 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | CPANSec | Rex | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| The sources have not yet published a verified CVSS metric. | ||||
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-94140 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-94140 weaknesses.
Official Sources and Advisories
Similar Vulnerabilities
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