Vulnerability GO-2026-4947
Unknown
UNKNOWN RISK
Vulnerabilities without an assigned CVSS score. Severity is not determinable from available data.
7 months ago
April 07, 2026 at 10:53 PM UTC
Unexpected work during chain building in crypto/x509
<1.25.9, >=1.26.0-0 <1.26.2
<1.25.9, >=1.26.0-0 <1.26.2
Summary
Unexpected work during chain building in crypto/x509
Details
During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls.
References
Related Vulnerabilities
Other vulnerabilities affecting the same packages
Unknown
3 days ago
HTTP/1 server crash due to MaxBytesReader header race in net/http
<1.26.11, >=1.27.0-0 <1.27.4 GO-2026-6859
<1.26.11, >=1.27.0-0 <1.27.4 GO-2026-6859
Unknown
24 days ago
Distrust compromised intermediate certificates in crypto/x509
<1.26.10, >=1.27.0-0 <1.27.3 GO-2026-6809
<1.26.10, >=1.27.0-0 <1.27.3 GO-2026-6809
Unknown
1 month ago
Reset context tracking on consecutive template expressions in html/template
<1.26.9, >=1.27.0-0 <1.27.2 GO-2026-6599
<1.26.9, >=1.27.0-0 <1.27.2 GO-2026-6599
Unknown
1 month ago
Recognize yield as regexp preceder keyword in html/template
<1.26.9, >=1.27.0-0 <1.27.2 GO-2026-6600
<1.26.9, >=1.27.0-0 <1.27.2 GO-2026-6600
Unknown
1 month ago
HTTP/2 server memory exhaustion due to Trailer headers in net/http
<1.26.9, >=1.27.0-0 <1.27.2 GO-2026-6603
<1.26.9, >=1.27.0-0 <1.27.2 GO-2026-6603
Impacted packages
Timeline
Published
7 months ago
April 07, 2026 at 10:53 PM UTC
Last Modified
6 hours ago
November 14, 2026 at 01:12 PM UTC