[UPDATE] [high] Golang Go: Multiple vulnerabilities allow unspecified attack
An attacker can exploit multiple vulnerabilities in Golang Go to carry out an unspecified attack.
CSIRTS triage
- What
- Multiple vulnerabilities allow unspecified attack.
- Who is affected
- Deployments of Golang Go.
- Urgency
- Remediation is urgent due to the high severity of the vulnerabilities.
- Action
- Monitor for updates and apply patches when available.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0548
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-2026-256790.73% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 50% of all scored CVEs.
- Low exploitation riskCVE-2026-271370.61% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 45% of all scored CVEs.
- Low exploitation riskCVE-2026-271380.35% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all scored CVEs.
- Low exploitation riskCVE-2026-271390.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all scored CVEs.
- Low exploitation riskCVE-2026-271420.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-25679 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-27137 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-27138 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-27139 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-27142 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
Recent advisories for Golang Go
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- medium[UPDATE] [medium] Golang Go: Multiple vulnerabilitiescert-bund · 2026-07-10
- medium[NEW] [medium] Golang Go: Multiple vulnerabilities allow information disclosurecert-bund · 2026-07-10
- high[UPDATE] [high] Golang Go: Multiple vulnerabilitiescert-bund · 2026-07-10
- medium[UPDATE] [medium] Golang Go: Multiple vulnerabilitiescert-bund · 2026-07-10
- medium[UPDATE] [medium] Golang Go: Vulnerability allows Denial of Servicecert-bund · 2026-07-10
- high[UPDATE] [high] Golang Go: Multiple vulnerabilitiescert-bund · 2026-07-10
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