Vulnerability · Published Sep 8, 2026 · Assigned by Google
CVE-2026-19201Denial of Service via Unbounded Recursion in go-attestation Windows SIPA Parser
Medium 6.6
In plain English
A medium-severity security flaw in go-attestation from Google. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
An uncontrolled recursion vulnerability in the Windows SIPA event log parser of Google go-attestation versions up to and including 0.6.1 allows an attacker to cause a denial of service (DoS). The (*WinEvents).readELAMAggregation function recurses for every nested elamAggregation sub-event without enforcing a maximum recursion depth limit, while the size guard is bypassed on recursive execution paths. By submitting a crafted Windows event log containing deeply nested elamAggregation headers, an attacker can exhaust the goroutine call stack, triggering an unrecoverable fatal runtime error (stack overflow) that immediately crashes the verifier application.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:14 | golang-github-google-go-attestation | 0.6.4-1 | DEBIAN-CVE-2026-19201 |
| Ubuntu:26.04:LTS | golang-github-google-go-attestation | no fix listed | UBUNTU-CVE-2026-19201 |
| Ubuntu:26.10 | golang-github-google-go-attestation | no fix listed | UBUNTU-CVE-2026-19201 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| go-attestation | 0.0.0 – through 0.6.1 |
Weakness: CWE-674 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U