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CVE-2026-33811General(golang / go)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch golang go systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

golang CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Patch / fix
Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-415CWE-1341

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • go

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • General: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-05-07); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
golang
Products
go

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-05-07: 1Mentions · 2026-05-15: 1Patch / Workaround · 2026-05-15: 1Technical Details · 2026-05-07: 105-0705-15
Signal classification2 categories
General
150.0%
Patch
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-05-071
General1
2026-05-151
Patch1
Full discourse2 posts
  • ThreatCluster@threatcluster
    Patch

    BREAKING: SUSE issues Go1.26 and Go1.25 security updates fixing DoS CVEs CVE-2026-33811 and CVE-2026-33814 in net and HTTP/2, administrators urged to patch affected SUSE Linux systems immediately. https://threatcluster.io/cluster/suse-linux-go126-and-go125-security-updates-address-critical-44c07030

    Post summary

    SUSE has released updates for Go1.26 and Go1.25 to fix CVE-2026-33811 and CVE-2026-33814, with administrators urged to apply the patches immediately.

    0000069
    277 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    General

    CVE-2026-33811 Double-Free Memory Corruption in LookupCNAME with cgo DNS Resolver https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-33811

    Post summary

    The text references CVE‑2026‑33811, describing a double‑free memory corruption flaw in Go’s cgo DNS resolver, but provides no additional technical, patch, or exploitation details.

    0000048
    4.0K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appgolanggo---

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