CVE-2023-49284 is a design flaw in the fish shell, affecting all versions released in the last 15+ years. The vulnerability stems from the shell's incorrect handling of internal Unicode non-characters in command substitution output, allowing them to be read rather than safely transformed. Rated 6.6 Medium (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H), this flaw could lead to denial of service or information disclosure, though code execution is not possible. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability. Users are advised to upgrade to fish shell 3.6.2 to remediate the issue.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.6.2CPE matchmatch criteria | cpe:2.3:a:fishshell:fish:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
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