CVE-2026-56221
CVE-2026-56221 is a medium-severity vulnerability 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-89.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v4: 7.1
- EPSS exploit prediction: 0% (19th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-38364
- Weakness: CWE-89
- Published:
- Last modified:
Description
Cap-go before 12.128.2 contains multiple SQL injection vulnerabilities in cloudflare.ts where user-controlled values from API request bodies are interpolated directly into SQL query strings without sanitization or parameterization. Authenticated users with read-level API key permissions can inject arbitrary SQL through deviceIds, search, version_name, cursor, and actions parameters to access analytics data belonging to other users or applications.
Frequently asked questions
- What is CVE-2026-56221?
- Cap-go before 12.128.2 contains multiple SQL injection vulnerabilities in cloudflare.ts where user-controlled values from API request bodies are interpolated directly into SQL query strings without sanitization or parameterization. Authenticated users with read-level API key permissions can inject arbitrary SQL through deviceIds, search, version_name, cursor, and actions parameters to access analytics data belonging to other users or applications.
- How severe is CVE-2026-56221?
- CVE-2026-56221 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-56221 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-56221?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-56221 have an EU (EUVD) identifier?
- Yes. CVE-2026-56221 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38364.
- When was CVE-2026-56221 published?
- CVE-2026-56221 was published on 2026-06-22 and last updated on 2026-06-23.
References
- https://github.com/Cap-go/capgo/security/advisories/GHSA-f83x-p28r-pf74
- https://www.vulncheck.com/advisories/cap-go-sql-injection-in-cloudflare-analytics-engine-queries-via-cloudflare-ts
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