# Go Programming Language 1.26.2

Go Programming Language 1.26.2, released April 7, 2026, fixes 10 CVEs in Go Programming Language. None of them is reported as exploited. Patch Radar priority: Urgent. The latest Go Programming Language is 1.27.4, which also fixes every one of these CVEs.

- Web page: https://patchblox.com/security/fix/windows-app/golang.go-1.26.2
- Platform: Windows apps
- Released: Apr 7, 2026
- Priority: Urgent (Closes CVE-2026-27140, rated Critical)
- CVEs: 10, exploited: 0, on CISA KEV: 0
- Superseded by: [Go Programming Language 1.27.4](https://patchblox.com/security/data/product/windows-app/go-programming-language.md), the latest version, which also fixes every CVE listed here

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Go Programming Language](https://patchblox.com/security/data/product/windows-app/go-programming-language.md) |  | 1.26.2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-27140](https://patchblox.com/security/data/cve/CVE-2026-27140.md) | Urgent | Code execution vulnerability in SWIG code generation in cmd/go | 9.8 | 0.0067 |  |
| [CVE-2026-27143](https://patchblox.com/security/data/cve/CVE-2026-27143.md) | Urgent | Missing bound checks can lead to memory corruption in safe Go in cmd/compile | 9.8 | 0.0055 |  |
| [CVE-2026-32283](https://patchblox.com/security/data/cve/CVE-2026-32283.md) | High | Unauthenticated TLS 1.3 KeyUpdate record can cause persistent connection retention and DoS in crypto/tls | 9.1 | 0.0063 |  |
| [CVE-2026-32280](https://patchblox.com/security/data/cve/CVE-2026-32280.md) | High | Unexpected work during chain building in crypto/x509 | 9.1 | 0.0063 |  |
| [CVE-2026-32281](https://patchblox.com/security/data/cve/CVE-2026-32281.md) | High | Inefficient policy validation in crypto/x509 | 9.1 | 0.0036 |  |
| [CVE-2026-33810](https://patchblox.com/security/data/cve/CVE-2026-33810.md) | High | Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509 | 9.1 | 0.0035 |  |
| [CVE-2026-32282](https://patchblox.com/security/data/cve/CVE-2026-32282.md) | High | TOCTOU permits root escape on Linux via Root.Chmod in os in internal/syscall/unix | 9.1 | 0.0030 |  |
| [CVE-2026-27144](https://patchblox.com/security/data/cve/CVE-2026-27144.md) | High | Miscompilation allows memory corruption via CONVNOP-wrapped array copy in cmd/compile | 9.0 | 0.0027 |  |
| [CVE-2026-32289](https://patchblox.com/security/data/cve/CVE-2026-32289.md) | Routine | JsBraceDepth Context Tracking Bugs (XSS) in html/template | 6.1 | 0.0030 |  |
| [CVE-2026-32288](https://patchblox.com/security/data/cve/CVE-2026-32288.md) | Routine | Unbounded allocation for old GNU sparse in archive/tar | 5.5 | 0.0030 |  |

---

Data as of 2026-11-11T07:45:43Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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