CriticalFix available
Apache Tomcat - HTTP/2 no-authority bypass of strict SNI validation
Type: advisorySources: OSV
Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990. This issue affects Apache Tomcat: from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, from 9.0.115 through 9.0.120. Users are recommended to upgrade to version 11.0.25, 10.1.59 or 9.0.121, which fix the issue.
- Products
- org.apache.tomcat.embed:tomcat-embed-core, org.apache.tomcat:tomcat-coyote
- Affected versions
- 10.1.53, 10.1.54, 10.1.55, 10.1.56, 10.1.57, 11.0.20, 11.0.21, 11.0.22, 11.0.23, 11.0.24, 9.0.115, 9.0.116, 9.0.117, 9.0.118, 9.0.119, 9.0.120
- Fixed versions
- 10.1.59, 11.0.25, 9.0.121
- CVEs
- CVE-2026-65637
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 18:43 UTC · Revision 1
Source evidence
Apache Tomcat - HTTP/2 no-authority bypass of strict SNI validation
core-osv · Original sourcePublished 26 Aug 2026, 00:30 UTC
Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990. This issue affects Apache Tomcat: from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, from 9.0.115 through 9.0.120. Users are recommended to upgrade to version 11.0.25, 10.1.59 or 9.0.121, which fix the issue.
osv:GHSA-f525-44xv-f2qj
org.apache.tomcat:tomcat-coyote
Fixed versions: 11.0.25
org.apache.tomcat:tomcat-coyote
Fixed versions: 10.1.59
org.apache.tomcat:tomcat-coyote
Fixed versions: 9.0.121
org.apache.tomcat.embed:tomcat-embed-core
Fixed versions: 11.0.25
org.apache.tomcat.embed:tomcat-embed-core
Fixed versions: 10.1.59
org.apache.tomcat.embed:tomcat-embed-core
Fixed versions: 9.0.121
Complete source record
{
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"url": "https://osv.dev/vulnerability/GHSA-f525-44xv-f2qj",
"method": "structured",
"payload": {
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"title": "Apache Tomcat - HTTP/2 no-authority bypass of strict SNI validation",
"summary": "Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990. This issue affects Apache Tomcat: from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, from 9.0.115 through 9.0.120. Users are recommended to upgrade to version 11.0.25, 10.1.59 or 9.0.121, which fix the issue.",
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"severity": "critical",
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"aliases": [
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"GHSA-f525-44xv-f2qj"
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"metrics": [
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"modified": "2026-10-27T15:10:58.130507578Z",
"provider": "osv",
"references": [
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"https://github.com/apache/tomcat/commit/40012414df828a56126f76a7339669c7c919aae7",
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"https://github.com/apache/tomcat/releases/tag/9.0.121",
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"https://tomcat.apache.org/security-10.html",
"https://tomcat.apache.org/security-11.html",
"https://tomcat.apache.org/security-9.html"
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"source_id": "core-osv",
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