fish-shop/syntax-check is a GitHub action for syntax checking fish shell files. Improper neutralization of delimiters in the pattern input (specifically the command separator ; and command substitution characters ( and )) mean that arbitrary command injection is possible by modification of the input value used in a workflow. This has the potential for exposure or exfiltration of sensitive information from the workflow runner, such as might be achieved by sending environment variables to an external entity. It is recommended that users update to the patched version v1.6.12 or the latest release version v2.0.0, however remediation may be possible through careful control of workflows and the pattern input value used by this action.
CVE-2024-42482
This medium-severity CVE scores 4.8 under NVD CVSS v3. EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.8
- EG Score
- 4.8(low)
- EG Risk
- —
- EPSS
- 53.4%
- KEV
- Not listed
Published
August 12, 2024
Last Modified
September 17, 2024
References (3)
- security-advisories@githubhttps://github.com/fish-shop/syntax-check/commit/91e6817c48ad475542fe4e78139029b036a53b03
- security-advisories@githubhttps://github.com/fish-shop/syntax-check/commit/c2cb11395e21119ff8d6e7ea050430ee7d6f49ca
- security-advisories@githubhttps://github.com/fish-shop/syntax-check/security/advisories/GHSA-xj87-mqvh-88w2
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 43× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 14:07 UTCEPSS rescore
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- 2026-05-23 13:05 UTCEG score recompute
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Frequently asked(5)
What is CVE-2024-42482?
When was CVE-2024-42482 disclosed?
Is CVE-2024-42482 actively exploited?
What is the CVSS score of CVE-2024-42482?
How do I remediate CVE-2024-42482?
Dependency Blast Radius
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