CVE-2026-75973
📛 CVE Title
Apache Tomcat: Cross-context authentication mix-up with Jakarta Authentication configured
Description
Improper Authentication vulnerability in Apache Tomcat. When Jakarta Authentication was configured with SimpleAuthConfigProvider as the default provider and multiple web application used that provider, the realm for the first web application to authenticate a request would be used for all web applications. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M4 through 9.0.121. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fixes the issue.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- apache
- CVSS severity
- —
- CVSS score
- —
- CVSS vector
- —
- Effective score
- 7.3 / 10 HIGH source: NVD
- CWE(s)
-
CWE-287 - Reserved
- 2026-08-18
- Published
- 2026-09-23 11:14 UTC
- Last updated
- 2026-09-23 18:10 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/75xxx/CVE-2026-75973.json
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
- 2026-09-23 12:17:06 UTC
- NVD last modified
- 2026-09-23 19:19:14 UTC
- NVD CVSS v3.1
- 7.3 / 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:L/I:L/A:L- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 3.4 / 10
NVD / KEV / EPSS data refreshed 2026-09-24 04:35 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-2026-85224 - Assigner
- apache
- Published
- Sep 23, 2026, 11:14:07 AM
- Updated
- Sep 23, 2026, 6:10:40 PM
- EUVD base score (CVSS 3.1)
-
7.3 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - EUVD-reported EPSS
- 0.0000
- Vendors
- Apache Software Foundation
- Products
-
Apache Tomcat (9.0.0.M4 ≤9.0.121)Apache Tomcat (11.0.0-M1 ≤11.0.25)Apache Tomcat (8.5.0 ≤8.5.100)Apache Tomcat (10.1.0-M1 ≤10.1.59)
- Aliases
-
GHSA-q9fp-9gfr-vj9g
ENISA description: Improper Authentication vulnerability in Apache Tomcat. When Jakarta Authentication was configured with SimpleAuthConfigProvider as the default provider and multiple web application used that provider, the realm for the first web application to authenticate a request would be used for all web applications. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M4 through 9.0.121. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fixes the issue.
EUVD references (1)
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
11.0.0-M1 (affected),
10.1.0-M1 (affected),
9.0.0.M4 (affected),
8.5.0 (affected),
0 (unaffected)
|
— |
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
- https://lists.apache.org/thread/njjcdkkzqyzx4n3ffc4ffjmyh5mpl1gr 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/2026/09/23/20 af854a3a-2127-422b-91ae-364da2661108
- https://lists.apache.org/thread/njjcdkkzqyzx4n3ffc4ffjmyh5mpl1gr security@apache.org
Remediations (10)
-
web:anonhaven.com
The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fixes the issue.
2026-09-24 11:51 UTC -
web:cvefeed.io
The following list is the news that have been mention CVE-2026-75973 vulnerability anywhere in the article. Results are limited to the first 20 news articles due to potential performance issues. The following table lists the changes that have been made to the CVE-2026-75973 vulnerability over time.
2026-09-24 11:51 UTC -
web:cvetodo.com
CVE-2026-75973 is an Improper Authentication vulnerability in Apache Tomcat. Full technical analysis, mitigations , and exploit status — updated in real time.
2026-09-24 11:51 UTC -
web:feedly.com
News [SECURITY] CVE-2026-75973 Apache Tomcat - Cross-context authentication mix-up with Jakarta Authentication configured
2026-09-24 11:51 UTC -
web:security-tracker.debian.org
Vulnerable and fixed packages The table below lists information on source packages.
2026-09-24 11:51 UTC -
web:www.cvefind.com
Full details for CVE-2026-75973 : technical description, impact, CVSS/EPSS scores, linked CWE, CAPEC, affected CPEs, disclosure date, and mitigation options.
2026-09-24 11:51 UTC -
web:www.enigma-global.com
Improper Authentication vulnerability in Apache Tomcat. When Jakarta Authentication was configured with SimpleAuthConfigProvider as the default provider and multiple web application used that provider
2026-09-24 11:51 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.
2026-09-24 11:51 UTC -
web:www.rapid7.com
CVE-2026-75973 : Apache Software Foundation Apache Tomcat: Improper Authentication vulnerability in Apache Tomcat. View severity, references, and remediation details from Rapid7.
2026-09-24 11:51 UTC -
web:www.tenable.com
Improper Authentication vulnerability in Apache Tomcat. When Jakarta Authentication was configured with SimpleAuthConfigProvider as the default provider and multiple web application used that provider, the realm for the first web application to authenticate a request would be used for all web applications. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through ...
2026-09-24 11:51 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-75973.json.
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