CVEvulnerability

CVE-2026-33811

7.5 HIGH Published 2026-05-07 Modified 2026-10-26 Official page ↗
Status
Modified
Published
2026-05-07
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-1341, CWE-415

Description

When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.

Affected configurations

• golang go (< 1.25.10) • golang go (>= 1.26.0 < 1.26.3)

Related

Weakness · CWE (2)

  • CWE-1341 Multiple Releases of Same Resource or Handle weakness
  • CWE-415 Double Free weakness

References