CVE-2026-91864
📛 CVE Title
Apache Neethi: Crafted WS-Policy documents bypass element/attribute limits causing memory exhaustion
Description
A specially crafted WS-Policy document can pack unlimited content inside a policy assertion, which Neethi copies into memory without counting it against its size limits, exhausting the heap (denial of service). Users are recommended to upgrade to version 3.2.4, which fixes this issue.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- apache
- CVSS severity
- —
- CVSS score
- —
- CVSS vector
- —
- Effective score
- 7.5 / 10 HIGH source: NVD
- CWE(s)
- —
- Reserved
- 2026-09-15
- Published
- 2026-09-21 11:26 UTC
- Last updated
- 2026-09-21 13:27 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/91xxx/CVE-2026-91864.json
- Linked Threat
- CVE-2026-91864 — Apache Neethi: Crafted WS-Policy documents bypass element/attribute limits causing memory exhaustion
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-09-21 12:17:24 UTC
- NVD last modified
- 2026-09-21 18:10:30 UTC
- NVD CVSS v3.1
- 7.5 / 10 HIGH source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 3.6 / 10
NVD-assigned CWE(s):
CWE-770
(differs from the CNA list above)
NVD / KEV / EPSS data refreshed 2026-09-22 03:24 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-83886 - Assigner
- apache
- Published
- Sep 21, 2026, 11:26:20 AM
- Updated
- Sep 21, 2026, 1:27:39 PM
- EUVD base score (CVSS 3.1)
-
7.5 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EUVD-reported EPSS
- 0.0000
- Vendors
- Apache Software Foundation
- Products
-
Apache Neethi (0 <3.2.4)
- Aliases
-
GHSA-cw6x-vx7r-8x4q
ENISA description: A specially crafted WS-Policy document can pack unlimited content inside a policy assertion, which Neethi copies into memory without counting it against its size limits, exhausting the heap (denial of service). Users are recommended to upgrade to version 3.2.4, which fixes this issue.
EUVD references (1)
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Apache Software Foundation | Apache Neethi |
0 (affected)
|
— |
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
- https://lists.apache.org/thread/400kbynbyhqhsjkv1yz251jm9wdz8z69 vendor-advisory
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
NVD-tagged references (2)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- http://www.openwall.com/lists/oss-security/2026/09/18/11 af854a3a-2127-422b-91ae-364da2661108
- https://lists.apache.org/thread/400kbynbyhqhsjkv1yz251jm9wdz8z69 security@apache.org
Remediations (10)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:msrc.microsoft.com
The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.
2026-09-22 16:45 UTC -
web:sec.cloudapps.cisco.com
On September 16, 2026 , the Cisco Product Security Incident Response Team (PSIRT) published the advisories that are listed in the following tables. To remediate these vulnerabilities, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the ...
2026-09-22 16:45 UTC -
web:senserva.com
Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.
2026-09-22 16:45 UTC -
web:support.microsoft.com
Description of the security update for Microsoft Exchange Server Subscription Edition RTM August 11, 2026 (KB5121573)
2026-09-22 16:45 UTC -
web:support.sap.com
SAP security Patch Day Bulletin This post shares the information on security notes that remediate vulnerabilities discovered in SAP products. SAP strongly recommends that the customer visits the support portal and applies patches on priority to protect their SAP landscape. On 9th of June 2026 , SAP security patch day saw the release of 15 new security notes.
2026-09-22 16:45 UTC -
web:vulners.com
CVE-2026-91864 🗓️ 21 Sep 2026 04:26:20 Reported by apache Type cve 🔗 web.nvd.nist.gov 👁 12 Views
2026-09-22 16:45 UTC -
web:www.oracle.com
This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.
2026-09-22 16:45 UTC -
web:www.oracle.com
This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.
2026-09-22 16:45 UTC -
web:www.rapid7.com
CVE-2026-91864 : Apache Software Foundation Apache Neethi: A specially crafted WS-Policy document can pack unlimited content inside a policy assertion, which Neethi copies into…. View severity, references, and remediation details from Rapid7.
2026-09-22 16:45 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's September 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-09-22 16:45 UTC
AI Forensic Analysis
Only Available for Registered Users. Sign in to view.
Raw JSON
The full cvelistV5 record. Download as CVE-2026-91864.json.
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2026-09-21T12:14:32.743Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/09/18/11"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-91864",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-21T13:27:33.548043Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-770",
"description": "CWE-770 Allocation of Resources Without Limits or Throttling",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-21T13:27:39.838Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "org.apache.neethi:neethi",
"product": "Apache Neethi",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "3.2.4",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "This issue was found using Claude agents to study the security of open-source projects"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "A specially crafted WS-Policy document can pack unlimited content inside a policy assertion, which Neethi copies into memory without counting it against its size limits, exhausting the heap (denial of service).<br>Users are recommended to upgrade to version 3.2.4, which fixes this issue."
}
],
"value": "A specially crafted WS-Policy document can pack unlimited content inside a policy assertion, which Neethi copies into memory without counting it against its size limits, exhausting the heap (denial of service).\nUsers are recommended to upgrade to version 3.2.4, which fixes this issue."
}
],
"metrics": [
{
"other": {
"content": {
"text": "moderate"
},
"type": "Textual description of severity"
},
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-21T11:26:20.054Z",
"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"shortName": "apache"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://lists.apache.org/thread/400kbynbyhqhsjkv1yz251jm9wdz8z69"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Apache Neethi: Crafted WS-Policy documents bypass element/attribute limits causing memory exhaustion",
"x_generator": {
"engine": "Vulnogram 1.0.3"
}
}
},
"cveMetadata": {
"assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"assignerShortName": "apache",
"cveId": "CVE-2026-91864",
"datePublished": "2026-09-21T11:26:20.054Z",
"dateReserved": "2026-09-15T09:54:19.238Z",
"dateUpdated": "2026-09-21T13:27:39.838Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}