# CVE-2026-33818

## Summary

- **CVE ID:** CVE-2026-33818
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** N/A
- **Published:** Aug 13, 2026
- **Last Modified:** Sep 17, 2026

## Description

Enforce a recursion limit in Unmarshal to prevent stack exhaustion when parsing deeply-nested, recursive structures.

## Affected Products

- Go standard library — encoding/asn1 (0)
- Go standard library — encoding/asn1 (1.26.0-0)
- Go standard library — encoding/asn1 (1.27.0-0)

## References

- [CNA](https://go.dev/issue/80405)
- [CNA](https://groups.google.com/g/golang-announce/c/94pEornpRlI)
- [CNA](https://go.dev/cl/814980)
- [CNA](https://pkg.go.dev/vuln/GO-2026-5972)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.57%
- **EPSS Percentile:** 45.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._