MEDIUMVulnerability
CVE-2026-59843
A flaw was found in libssh. A remote authenticated peer can advertise a zero maximum packet size in SSH_MSG_CHANNEL_OPEN, causing later channel writes to loop indefinitely and consume CPU, leading to denial of service.
Properties
- severity
- MEDIUM
- score
- 6.5
- cve_id
- CVE-2026-59843
- vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- published_at
- 2026-07-21T12:18:57.860
- last_modified
- 2026-08-12T20:17:45.717
Related Entities (8)
AFFECTS_PRODUCT (5)
→[Product]
→[Product]
→[Product]
→[Product]
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HAS_WEAKNESS (2)
→[Weakness]Loop with Unreachable Exit Condition ('Infinite Loop')
→[Weakness]Uncontrolled Resource Consumption
DESCRIBED_BY (1)
→[Source]NVD
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