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VulnerabilityPublished Updated

CVE-2026-32282: Go standard library internal/syscall/unix · UNIX Symbolic Link (Symlink) Following

Affects Go standard library internal/syscall/unixSource CVE Database V5

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Not known to be exploited · CVSS 6.4 Medium : upgrade to 1.26.2 or 1.25.9 when convenient.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
6.4Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.26.2, 1.25.9
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade Go standard library internal/syscall/unix to 1.26.2 or 1.25.9.

Affected software

ProductAffectedFixed in
Go standard libraryinternal/syscall/unixAffected
  • >=1.26.0-0 <1.26.2
Fixed in
  • 1.26.2
Go standard libraryinternal/syscall/unixAffected
  • <1.25.9
Fixed in
  • 1.25.9
Gointernal/syscall/unixpkg:golang/internal/syscall/unixOther threatsAffected
  • <1.25.9
  • >=1.26.0-0 <1.26.2
Fixed in
  • 1.25.9
  • 1.26.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, users should be cautious when using Root.Chmod in environments where untrusted users can replace files with symlinks during operations. Consider implementing additional application-level checks or avoiding use of vulnerable versions if possible.

Description

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.

References

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