CVE-2023-43809 is a high-severity authentication bypass vulnerability affecting Soft Serve, a self-hostable Git server, prior to version 0.6.2. An unauthenticated, remote attacker can exploit this flaw by manipulating SSH requests using keyboard-interactive authentication when the "allow-keyless" setting is active, bypassing public key authentication and gaining unauthorized access. The vulnerability has a CVSS score of 7.5 (High) due to its network-based attack vector, low complexity, and potential for complete confidentiality compromise. While no active exploitation, public exploit code, or significant community discussion has been observed, users are strongly advised to upgrade to Soft Serve v0.6.2 or disable keyboard-interactive SSH authentication as a temporary workaround.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.6.2CPE matchmatch criteria | cpe:2.3:a:charm:soft_serve:*:*:*:*:*:go:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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