CVE-2025-54313: Prettier eslint-config-prettier Embedded Malicious Code Vulnerability

Should you act?

Exploited: patch now if you run it

CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

• Yes, if you run Prettier eslint-config-prettier. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-01-22, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-02-12; treat that as the outer limit, not the target.
• EPSS 5.1%, percentile 92: FIRST’s model estimates a 5.1% chance of exploitation activity in the next 30 days, higher than 92% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
• Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

What it is

eslint-config-prettier 8.10.1, 9.1.1, 10.1.6, and 10.1.7 has embedded malicious code for a supply chain compromise. Installing an affected package executes an install.js file that launches the node-gyp.dll malware on Windows.

CISA’s summary

Prettier eslint-config-prettier contains an embedded malicious code vulnerability. Installing an affected package executes an install.js file that launches the node-gyp.dll malware on Windows.

Weakness type: CWE-506.

Product: Prettier eslint-config-prettier · Assigned by: mitre · Published: 2025-07-19

Affected and fixed versions

Severity scores

• Attack vector: network (remotely reachable)
• Attack complexity: high (needs special conditions)
• Privileges required: none (no login)
• User interaction: none
• Scope: changed (can affect other components)

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

• CISA KEV: added 2026-01-22; federal due date 2026-02-12. Known ransomware use: Unknown.
• CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
• CISA SSVC assessment: exploitation active, automatable no, technical impact partial.
• FIRST EPSS (model of 2026-10-21): 5.12% probability of exploitation activity in the next 30 days; percentile 92.

Timeline

• 2025-07-19 — CVE record published by mitre
• 2026-01-22 — Added to CISA’s Known Exploited Vulnerabilities catalog
• 2026-02-12 — CISA remediation deadline for US federal agencies
• 2026-02-26 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vendor and project advisories, patches

1. Listed in CISA KEV notes (npmjs.com) npmjs.com
2. Listed in CISA KEV notes (github.com) github.com

Vulnerability records

1. CVE.org record CVE-2025-54313 cve.org
2. NVD entry CVE-2025-54313 nvd.nist.gov

Government

1. CISA Known Exploited Vulnerabilities catalog entry cisa.gov

Other references from the CVE record and advisory

1. socket.dev socket.dev
2. bleepingcomputer.com bleepingcomputer.com
3. github.com github.com
4. stepsecurity.io stepsecurity.io
5. news.ycombinator.com news.ycombinator.com
6. news.ycombinator.com news.ycombinator.com
7. github.com github.com
8. endorlabs.com endorlabs.com

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