CVE-2026-59848: Vulnerability in Red Hat Red Hat Enterprise Linux 10
A vulnerability in libssh used by Red Hat Enterprise Linux 10 allows a malicious SFTP server to send responses with unknown request IDs, causing the client to queue these indefinitely. This leads to unbounded memory growth and a denial of service condition on the client side. The issue has a medium severity with a CVSS score of 5.3. No specific affected versions or patch information are provided in the available data. The vendor advisory link is provided but does not contain explicit remediation details in the input.
AI Analysis
Technical Summary
CVE-2026-59848 describes a vulnerability in libssh where a malicious SFTP server can send responses for unknown request IDs. Libssh clients keep these responses queued indefinitely, resulting in unbounded memory growth and client-side denial of service. This affects Red Hat Enterprise Linux 10. The CVSS 3.1 base score is 5.3 (medium severity), indicating network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability (denial of service). No patch or remediation level is specified in the provided data. The vendor advisory URL is available but does not explicitly confirm patch availability or mitigation steps in the provided content.
Potential Impact
The vulnerability can cause unbounded memory growth on libssh clients when interacting with a malicious SFTP server, leading to client-side denial of service. There is no impact on confidentiality or integrity reported. No known exploits in the wild have been identified at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://access.redhat.com/security/cve/CVE-2026-59848 for current remediation guidance. Until a fix is confirmed, avoid connecting to untrusted or suspicious SFTP servers to reduce exposure to this vulnerability.
CVE-2026-59848: Vulnerability in Red Hat Red Hat Enterprise Linux 10
Description
A vulnerability in libssh used by Red Hat Enterprise Linux 10 allows a malicious SFTP server to send responses with unknown request IDs, causing the client to queue these indefinitely. This leads to unbounded memory growth and a denial of service condition on the client side. The issue has a medium severity with a CVSS score of 5.3. No specific affected versions or patch information are provided in the available data. The vendor advisory link is provided but does not contain explicit remediation details in the input.
CVSS v3.1
Score 5.3medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-59848 describes a vulnerability in libssh where a malicious SFTP server can send responses for unknown request IDs. Libssh clients keep these responses queued indefinitely, resulting in unbounded memory growth and client-side denial of service. This affects Red Hat Enterprise Linux 10. The CVSS 3.1 base score is 5.3 (medium severity), indicating network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability (denial of service). No patch or remediation level is specified in the provided data. The vendor advisory URL is available but does not explicitly confirm patch availability or mitigation steps in the provided content.
Potential Impact
The vulnerability can cause unbounded memory growth on libssh clients when interacting with a malicious SFTP server, leading to client-side denial of service. There is no impact on confidentiality or integrity reported. No known exploits in the wild have been identified at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://access.redhat.com/security/cve/CVE-2026-59848 for current remediation guidance. Until a fix is confirmed, avoid connecting to untrusted or suspicious SFTP servers to reduce exposure to this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-07-07T15:40:24.561Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-59848","vendor":"Red Hat"}]
Threat ID: 6a5f7ac92a4a8d598939c052
Added to database: 07/21/2026, 13:57:29 UTC
Last enriched: 07/21/2026, 14:11:52 UTC
Last updated: 07/21/2026, 15:09:53 UTC
Views: 8
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