CVE-2026-56860: Avoid quadratic complexity in resolvePath in net/url
CSIRTS triage
- What
- The net/url module has quadratic complexity in resolvePath that can be exploited to cause denial of service.
- Who is affected
- All deployments using Go's net/url parsing with untrusted input.
- Urgency
- Medium priority; unexcploited but affects network parsing reliability and DoS resistance.
- Action
- Update to the patched Go version addressing CVE-2026-56860.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56860
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-568600.44% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-56860 | coverage & exploitation status | NVD · CVE.org |
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