Public vulnerability disclosure
CVE-2026-33818
Enforce maximum recursion depth in encoding/asn1
publishedCWE-400
Enforce a recursion limit in Unmarshal to prevent stack exhaustion when parsing deeply-nested, recursive structures.
Technical severity7.5 highCVSS 3.1 · ADP: CISA-ADP
Published2026-08-13Source updated 2026-11-01
Collected2026-11-022 attributed sources
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| encoding/asn1 Go standard library encoding/asn1
https://pkg.go.dev |
≥ 0; < 1.25.13 (affected, semver) ≥ 1.26.0-0; < 1.26.6 (affected, semver) ≥ 1.27.0-0; < 1.27.0-rc.3 (affected, semver) Other versions: unaffected |
CNA: Go |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | ADP: CISA-ADP |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.