CVE-2026-1245
CVE-2026-1245 is a medium-severity vulnerability in Keichi Binary-parser with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 1% (40th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-3343
- Weakness: CWE-94
- Affected product: Keichi Binary-parser
- Published:
- Last modified:
Description
A code injection vulnerability in the binary-parser library prior to version 2.3.0 allows arbitrary JavaScript code execution when untrusted values are used in parser field names or encoding parameters. The library directly interpolates these values into dynamically generated code without sanitization, enabling attackers to execute arbitrary code in the context of the Node.js process.
Frequently asked questions
- What is CVE-2026-1245?
- A code injection vulnerability in the binary-parser library prior to version 2.3.0 allows arbitrary JavaScript code execution when untrusted values are used in parser field names or encoding parameters. The library directly interpolates these values into dynamically generated code without sanitization, enabling attackers to execute arbitrary code in the context of the Node.js process.
- How severe is CVE-2026-1245?
- CVE-2026-1245 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2026-1245 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-1245?
- CVE-2026-1245 affects Keichi Binary-parser. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-1245?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-1245 have an EU (EUVD) identifier?
- Yes. CVE-2026-1245 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3343.
- When was CVE-2026-1245 published?
- CVE-2026-1245 was published on 2026-01-20 and last updated on 2026-06-17.
References
- https://github.com/keichi/binary-parser
- https://github.com/keichi/binary-parser/pull/283
- https://kb.cert.org/vuls/id/102648
- https://www.npmjs.com/package/binary-parser
- https://www.kb.cert.org/vuls/id/102648
Affected products (1)
- cpe:2.3:a:keichi:binary-parser:*:*:*:*:*:node.js:*:*
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