CVE-2014-2914: fish (aka fish-shell) 2.0.0 before 2.1.1 does not restrict access to the configuration service (aka fish_confi

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CRITICAL 9.8REMOTEUPGRADE

CVE-2014-2914 is a critical-severity flaw (CVSS 9.8) affecting fish. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

fish (aka fish-shell) 2.0.0 before 2.1.1 does not restrict access to the configuration service (aka fish_config), which allows remote attackers to execute arbitrary code via unspecified vectors, as demonstrated by set_prompt.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.2% (top 12%)
CISA exploited list	No
Weakness	CWE-20
Published	2020-01-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: fishshell

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-01-28 16:15 UTCPublished CVE record published
2026-06-17 00:07 UTCUpdated Record last modified

fishshell fish UPGRADE

Affected: >= 2.0.0 and < 2.1.1

Fixed in: 2.1.1

Safe to downgrade to: a release before 2.0.0

1. Check installed version

apt-cache policy fish || rpm -q fish || fish --version

2. UPGRADE to 2.1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fish

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fish

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)

apt-cache madison fish sudo apt install fish=<VERSION_BEFORE_2.0.0> sudo apt-mark hold fish

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list fish sudo dnf downgrade fish-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add fish

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2014-2914?

fish: upgrade to 2.1.1. Exact commands for each OS are on this page.

Is CVE-2014-2914 being exploited?

CVE-2014-2914 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-2014-2914 affect?

CVE-2014-2914 affects fish. Severity is critical (CVSS 9.8). fish (aka fish-shell) 2.0.0 before 2.1.1 does not restrict access to the configuration service (aka fish_config), which allows remote attackers to execute arbitrary code via unspecified vectors, as demonstrated by set_prompt.

How urgent is CVE-2014-2914?

Priority 61/100. Critical severity; Remotely exploitable, no login, no user action

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References

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