PatchTheCVECVE-2023-49284: fish is a smart and user-friendly command line shell for macOS, Linux, and the rest of the family
CVE-2023-49284 is a low-severity flaw (CVSS 3.9) affecting fish. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
fish is a smart and user-friendly command line shell for macOS, Linux, and the rest of the family. fish shell uses certain Unicode non-characters internally for marking wildcards and expansions. It will incorrectly allow these markers to be read on command substitution output, rather than transforming them into a safe internal representation. While this may cause unexpected behavior with direct input (for example, echo \UFDD2HOME has the same out
Why this priority
- Public exploit reference
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 3.9 (Low) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | Required |
| EPSS exploit chance | 0.5% (top 59%) |
| CISA exploited list | No |
| Weakness | CWE-436 |
| Published | 2023-12-05 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2023-49284?
fish: upgrade to 3.6.2. Exact commands for each OS are on this page.
Is CVE-2023-49284 being exploited?
CVE-2023-49284 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2023-49284 affect?
CVE-2023-49284 affects fish. Severity is low (CVSS 3.9). fish is a smart and user-friendly command line shell for macOS, Linux, and the rest of the family. fish shell uses certain Unicode non-characters internally for marking wildcards and expansions. It will incorrectly allow these markers to be
How urgent is CVE-2023-49284?
Priority 34/100. Public exploit reference; On your watchlist
Software pages
Related CVEs
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- CVE-2014-3856 HIGH 7.0 UPGRADE The funced function in fish (aka fish-shell) 1.23.0 before 2.1.1 does not properly create temporary files, whi
- CVE-2014-3219 HIGH 7.8 UPGRADE MITIGATE fish before 2.1.1 allows local users to write to arbitrary files via a symlink attack on (1) /tmp/fishd.log.%s
- CVE-2014-2914 CRITICAL 9.8 UPGRADE fish (aka fish-shell) 2.0.0 before 2.1.1 does not restrict access to the configuration service (aka fish_confi
- CVE-2014-2906 HIGH 7.0 UPGRADE The psub function in fish (aka fish-shell) 1.16.0 before 2.1.1 does not properly create temporary files, which