🛡️ CVE-2026-32282 — go

🟡 CVSS 6.4 — Medium ✅ No Known Exploit CWE-59 NVD
6.4
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

TOCTOU permits root escape on Linux via Root.Chmod in os in internal/syscall/unix

On Linux, if the target of Root.Chmod is replaced with a symlink while the chmod operation is in progress, Chmod can operate on the target of the symlink, even when the target lies outside the root.

The Linux fchmodat syscall silently ignores the AT_SYMLINK_NOFOLLOW flag, which Root.Chmod uses to avoid symlink traversal. Root.Chmod checks its target before acting and returns an error if the target is a symlink lying outside the root, so the impact is limited to cases where the target is replaced with a symlink between the check and operation.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-32282 is classified as CWE-59: Link Following. The software follows symbolic or hard links without verifying their target, so a planted link can redirect an operation to a sensitive file.

Affected software

CVE-2026-32282 is recorded against 3 packages.

  • go (from 1.26.0 up to 1.26.2)
  • golang
  • stdlib

Timeline and source

Published on 8 April 2026 and last revised on 25 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

go.dev
go.dev
groups.google.com
pkg.go.dev

CVE-2026-32282 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 6.4
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE CWE-59
Public Exploit ✅ No
Source NVD
Published 2026-04-08
Updated 2026-08-12
Modified 2026-07-25

Affected Packages

Software From version Fixed in
go 1.26.0 1.26.2
golang — —
stdlib — —

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