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[GHSA-4j3c-42xv-3f84] Apache Tomcat Utilities is vulnerable to resource exhaustion when using the APR/Native connector #7667

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[GHSA-4j3c-42xv-3f84] Apache Tomcat Utilities is vulnerable to resource exhaustion when using the APR/Native connector #7667

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52 changes: 43 additions & 9 deletions advisories/github-reviewed/2025/07/GHSA-4j3c-42xv-3f84/GHSA-4j3c-42xv-3f84.json
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Original file line number Diff line number Diff line change
@@ -1,28 +1,62 @@
{
"schema_version": "1.4.0",
"id": "GHSA-4j3c-42xv-3f84",
"modified": "2025-11-05T20:14:29Z",
"modified": "2025-11-05T20:14:32Z",
"published": "2025-07-10T21:31:52Z",
"aliases": [
"CVE-2025-52434"
],
"summary": "Apache Tomcat Utilities is vulnerable to resource exhaustion when using the APR/Native connector",
"details": "Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat when using the APR/Native connector. This was particularly noticeable with client initiated closes of HTTP/2 connections.\n\nThis issue affects Apache Tomcat: from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected.\n\nUsers are recommended to upgrade to version 9.0.107, which fixes the issue.",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U"
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H"
}
],
Comment on lines 11 to 16
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-util"
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
Comment on lines 18 to +22
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@yusuke-koyoshi yusuke-koyoshi May 12, 2026

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After verifying the fix commit (apache/tomcat@8a83c3c), the only modified file is java/org/apache/tomcat/util/net/AprEndpoint.java. This file is not included in the org.apache.tomcat:tomcat-util artifact, so that package is not affected by this vulnerability. I've updated the affected packages list accordingly.

"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "9.0.0.M1"
},
{
"fixed": "9.0.107"
}
]
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "8.5.0"
},
{
"last_affected": "8.5.100"
}
]
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-coyote"
},
"ranges": [
{
Expand All @@ -41,7 +75,7 @@
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-util"
"name": "org.apache.tomcat:tomcat-coyote"
},
"ranges": [
{
Expand Down Expand Up @@ -88,7 +122,7 @@
"cwe_ids": [
"CWE-362"
],
"severity": "MODERATE",
"severity": "HIGH",
"github_reviewed": true,
"github_reviewed_at": "2025-07-10T22:55:26Z",
"nvd_published_at": "2025-07-10T19:15:25Z"
Expand Down
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