Apache Tomcat: Unbounded read in WebDAV LOCK and PROPFIND handling
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 18 fixed, 9 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-770.
Summary
Allocation of Resources Without Limits or Throttling vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117. Older, unsupported versions may also be affected. Users are recommended to upgrade to version [FIXED_VERSION], which fixes the issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache Tomcat | 11.0.0-M1 – 11.0.21; 10.1.0-M1 – 10.1.54; 9.0.0.M1 – 9.0.117; 10.0.0-M1 – 10.0.27; 8.5.0 – 8.5.100; 4.0 – 7.0.109 | — | No fix listed | CNA |
| — | org.apache.tomcat.embed:tomcat-embed-core (Maven) | before 9.0.118 | 9.0.118 | Patch available | GHSA-gx5v-xp9w-j4cg |
| — | org.apache.tomcat.embed:tomcat-embed-core (Maven) | 10.1.0-M1 to before 10.1.55 | 10.1.55 | Patch available | GHSA-gx5v-xp9w-j4cg |
| — | org.apache.tomcat.embed:tomcat-embed-core (Maven) | 11.0.0-M1 to before 11.0.22 | 11.0.22 | Patch available | GHSA-gx5v-xp9w-j4cg |
| — | org.apache.tomcat:tomcat (Maven) | before 9.0.118 | 9.0.118 | Patch available | GHSA-gx5v-xp9w-j4cg |
| — | org.apache.tomcat:tomcat (Maven) | 10.1.0-M1 to before 10.1.55 | 10.1.55 | Patch available | GHSA-gx5v-xp9w-j4cg |
| — | org.apache.tomcat:tomcat (Maven) | 11.0.0-M1 to before 11.0.22 | 11.0.22 | Patch available | GHSA-gx5v-xp9w-j4cg |
| — | org.apache.tomcat:tomcat-catalina (Maven) | before 9.0.118 | 9.0.118 | Patch available | GHSA-gx5v-xp9w-j4cg |
| — | org.apache.tomcat:tomcat-catalina (Maven) | 10.1.0-M1 to before 10.1.55 | 10.1.55 | Patch available | GHSA-gx5v-xp9w-j4cg |
| — | org.apache.tomcat:tomcat-catalina (Maven) | 11.0.0-M1 to before 11.0.22 | 11.0.22 | Patch available | GHSA-gx5v-xp9w-j4cg |
- Apache Tomcat VendorApache Affected 11.0.0-M1 – 11.0.21; 10.1.0-M1 – 10.1.54; 9.0.0.M1 – 9.0.117; 10.0.0-M1 – 10.0.27; 8.5.0 – 8.5.100; 4.0 – 7.0.109 Fixed in — No fix listed CNA
- org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected before 9.0.118 Fixed in 9.0.118 Patch available GHSA-gx5v-xp9w-j4cg
- org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 10.1.0-M1 to before 10.1.55 Fixed in 10.1.55 Patch available GHSA-gx5v-xp9w-j4cg
- org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.22 Fixed in 11.0.22 Patch available GHSA-gx5v-xp9w-j4cg
- org.apache.tomcat:tomcat (Maven) Vendor— Affected before 9.0.118 Fixed in 9.0.118 Patch available GHSA-gx5v-xp9w-j4cg
- org.apache.tomcat:tomcat (Maven) Vendor— Affected 10.1.0-M1 to before 10.1.55 Fixed in 10.1.55 Patch available GHSA-gx5v-xp9w-j4cg
- org.apache.tomcat:tomcat (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.22 Fixed in 11.0.22 Patch available GHSA-gx5v-xp9w-j4cg
- org.apache.tomcat:tomcat-catalina (Maven) Vendor— Affected before 9.0.118 Fixed in 9.0.118 Patch available GHSA-gx5v-xp9w-j4cg
- org.apache.tomcat:tomcat-catalina (Maven) Vendor— Affected 10.1.0-M1 to before 10.1.55 Fixed in 10.1.55 Patch available GHSA-gx5v-xp9w-j4cg
- org.apache.tomcat:tomcat-catalina (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.22 Fixed in 11.0.22 Patch available GHSA-gx5v-xp9w-j4cg
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | 4.0.0 – 7.0.109; 8.5.0 – 8.5.100; 9.0.0 to before 9.0.118; 10.0.0 – 10.0.27; 10.1.0 to before 10.1.55; 11.0.0 to before 11.0.22 | Vulnerable | Apache |
- cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* Versions 4.0.0 – 7.0.109; 8.5.0 – 8.5.100; 9.0.0 to before 9.0.118; 10.0.0 – 10.0.27; 10.1.0 to before 10.1.55; 11.0.0 to before 11.0.22 Vulnerable ·Apache
Remediation
- Fix · GHSA-gx5v-xp9w-j4cg org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 9.0.118 Advisory →
- Fix · GHSA-gx5v-xp9w-j4cg org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 10.1.55 Advisory →
- Fix · GHSA-gx5v-xp9w-j4cg org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 11.0.22 Advisory →
- Fix · GHSA-gx5v-xp9w-j4cg org.apache.tomcat:tomcat (Maven) Fixed in 9.0.118 Advisory →
- Fix · GHSA-gx5v-xp9w-j4cg org.apache.tomcat:tomcat (Maven) Fixed in 10.1.55 Advisory →
- Fix · GHSA-gx5v-xp9w-j4cg org.apache.tomcat:tomcat (Maven) Fixed in 11.0.22 Advisory →
- Fix · GHSA-gx5v-xp9w-j4cg org.apache.tomcat:tomcat-catalina (Maven) Fixed in 9.0.118 Advisory →
- Fix · GHSA-gx5v-xp9w-j4cg org.apache.tomcat:tomcat-catalina (Maven) Fixed in 10.1.55 Advisory →
- Fix · GHSA-gx5v-xp9w-j4cg org.apache.tomcat:tomcat-catalina (Maven) Fixed in 11.0.22 Advisory →
Red Hat 14 advisories
- RHSA-2026:68651 Released 2026-09-18 · Red Hat rating Moderatetomcat9 security update
- Red Hat Enterprise Linux AppStream (v. 10) tomcat9-1:9.0.120-1.el10_2, tomcat9-admin-webapps-1:9.0.120-1.el10_2, tomcat9-docs-webapp-1:9.0.120-1.el10_2 +5
- RHSA-2026:68677 Released 2026-09-17 · Red Hat rating Importanttomcat security update
- Red Hat Enterprise Linux AppStream (v. 8) tomcat-1:9.0.120-1.el8_10, tomcat-admin-webapps-1:9.0.120-1.el8_10, tomcat-docs-webapp-1:9.0.120-1.el8_10 +5
- RHSA-2026:68660 Released 2026-09-17 · Red Hat rating Moderatetomcat security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 9) tomcat-1:9.0.120-2.el9_8, tomcat-admin-webapps-1:9.0.120-2.el9_8, tomcat-docs-webapp-1:9.0.120-2.el9_8 +5
Show 11 more Red Hat advisories
- RHSA-2026:68659 Released 2026-09-17 · Red Hat rating Importanttomcat security update
- Red Hat Enterprise Linux AppStream EUS (v.9.6) tomcat-1:9.0.120-1.el9_6, tomcat-admin-webapps-1:9.0.120-1.el9_6, tomcat-docs-webapp-1:9.0.120-1.el9_6 +5
- RHSA-2026:68678 Released 2026-09-17 · Red Hat rating Importanttomcat security update
- Red Hat Enterprise Linux AppStream E4S (v.9.2) tomcat-1:9.0.120-1.el9_2, tomcat-admin-webapps-1:9.0.120-1.el9_2, tomcat-docs-webapp-1:9.0.120-1.el9_2 +5
- RHSA-2026:68679 Released 2026-09-17 · Red Hat rating Importanttomcat security update
- Red Hat Enterprise Linux AppStream E4S (v.9.4) tomcat-1:9.0.120-1.el9_4, tomcat-admin-webapps-1:9.0.120-1.el9_4, tomcat-docs-webapp-1:9.0.120-1.el9_4 +5
- RHSA-2026:68680 Released 2026-09-17 · Red Hat rating Importanttomcat security update
- Red Hat Enterprise Linux AppStream E4S (v.8.8) tomcat-1:9.0.120-1.el8_8, tomcat-admin-webapps-1:9.0.120-1.el8_8, tomcat-docs-webapp-1:9.0.120-1.el8_8 +5
- Red Hat Enterprise Linux AppStream TUS (v.8.8) tomcat-1:9.0.120-1.el8_8, tomcat-admin-webapps-1:9.0.120-1.el8_8, tomcat-docs-webapp-1:9.0.120-1.el8_8 +5
- RHSA-2026:68258 Released 2026-09-16 · Red Hat rating ImportantRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images tomcat11-1:11.0.26-0.1.hum1@noarch@public-hummingbird-aarch64-rpms, tomcat11-1:11.0.26-0.1.hum1@noarch@public-hummingbird-x86_64-rpms, tomcat11-1:11.0.26-0.1.hum1@src +18
- RHSA-2026:68257 Released 2026-09-16 · Red Hat rating ImportantRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images tomcat10-1:10.1.60-0.1.hum1@noarch@public-hummingbird-aarch64-rpms, tomcat10-1:10.1.60-0.1.hum1@noarch@public-hummingbird-x86_64-rpms, tomcat10-1:10.1.60-0.1.hum1@src +18
- RHSA-2026:67163 Released 2026-09-14 · Red Hat rating Importanttomcat9 security update
- Red Hat Enterprise Linux AppStream EUS (v. 10.0) tomcat9-1:9.0.120-1.el10_0, tomcat9-admin-webapps-1:9.0.120-1.el10_0, tomcat9-docs-webapp-1:9.0.120-1.el10_0 +5
- RHSA-2026:43401 Released 2026-07-22 · Red Hat rating ImportantRed Hat JBoss Web Server 6.2.4 release and security update
- Red Hat JBoss Web Server 6.2 on RHEL 10 jws6-tomcat-10.1.49-15.redhat_00013.1.el10jws, jws6-tomcat-admin-webapps-10.1.49-15.redhat_00013.1.el10jws, jws6-tomcat-docs-webapp-10.1.49-15.redhat_00013.1.el10jws +7
- Red Hat JBoss Web Server 6.2 on RHEL 8 jws6-tomcat-10.1.49-15.redhat_00013.1.el8jws, jws6-tomcat-admin-webapps-10.1.49-15.redhat_00013.1.el8jws, jws6-tomcat-docs-webapp-10.1.49-15.redhat_00013.1.el8jws +7
- Red Hat JBoss Web Server 6.2 on RHEL 9 jws6-tomcat-10.1.49-15.redhat_00013.1.el9jws, jws6-tomcat-admin-webapps-10.1.49-15.redhat_00013.1.el9jws, jws6-tomcat-docs-webapp-10.1.49-15.redhat_00013.1.el9jws +7
- RHSA-2026:43402 Released 2026-07-22 · Red Hat rating ImportantRed Hat JBoss Web Server 6.2.4 release and security update
- Red Hat JBoss Web Server 6.2.4
- RHSA-2026:39188 Released 2026-07-14 · Red Hat rating ImportantRed Hat JBoss Web Server 7.0.0 security release
- Red Hat JBoss Web Server 7.0 on RHEL 10 jws7-tomcat-11.0.21-5.redhat_00004.1.el10jws, jws7-tomcat-admin-webapps-11.0.21-5.redhat_00004.1.el10jws, jws7-tomcat-docs-webapp-11.0.21-5.redhat_00004.1.el10jws +7
- Red Hat JBoss Web Server 7.0 on RHEL 8 jws7-tomcat-11.0.21-5.redhat_00004.1.el8jws, jws7-tomcat-admin-webapps-11.0.21-5.redhat_00004.1.el8jws, jws7-tomcat-docs-webapp-11.0.21-5.redhat_00004.1.el8jws +7
- Red Hat JBoss Web Server 7.0 on RHEL 9 jws7-tomcat-11.0.21-5.redhat_00004.1.el9jws, jws7-tomcat-admin-webapps-11.0.21-5.redhat_00004.1.el9jws, jws7-tomcat-docs-webapp-11.0.21-5.redhat_00004.1.el9jws +7
- RHSA-2026:39189 Released 2026-07-14 · Red Hat rating ImportantRed Hat JBoss Web Server 7.0.0 security release
- Red Hat JBoss Web Server 7.0.0
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | — |
| Red Hat Enterprise Linux 6 | Affected | — |
| Red Hat Enterprise Linux 7 | Affected | — |
| Red Hat Enterprise Linux 8 | Affected | — |
| Red Hat Enterprise Linux 9 | Affected | — |
| Red Hat JBoss Web Server 5 | Affected | No fix planned: Will not fix |
| Red Hat Single Sign-On 7 | Affected | No fix yet: Fix deferred |
| Red Hat build of Apache Camel - HawtIO 4 | Affected | No fix yet |
| Red Hat build of Debezium 3 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:68651 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:68677 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:68660 |
| Red Hat Enterprise Linux AppStream E4S (v.8.8) | Fixed | RHSA-2026:68680 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2026:68678 |
| Red Hat Enterprise Linux AppStream E4S (v.9.4) | Fixed | RHSA-2026:68679 |
| Red Hat Enterprise Linux AppStream EUS (v. 10.0) | Fixed | RHSA-2026:67163 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:68659 |
| Red Hat Enterprise Linux AppStream TUS (v.8.8) | Fixed | RHSA-2026:68680 |
| Red Hat Hardened Images | Fixed | RHSA-2026:68257, RHSA-2026:68258 |
| Red Hat JBoss Web Server 6.2 on RHEL 10 | Fixed | RHSA-2026:43401 |
| Red Hat JBoss Web Server 6.2 on RHEL 8 | Fixed | RHSA-2026:43401 |
| Red Hat JBoss Web Server 6.2 on RHEL 9 | Fixed | RHSA-2026:43401 |
| Red Hat JBoss Web Server 6.2.4 | Fixed | RHSA-2026:43402 |
| Red Hat JBoss Web Server 7.0 on RHEL 10 | Fixed | RHSA-2026:39188 |
| Red Hat JBoss Web Server 7.0 on RHEL 8 | Fixed | RHSA-2026:39188 |
| Red Hat JBoss Web Server 7.0 on RHEL 9 | Fixed | RHSA-2026:39188 |
| Red Hat JBoss Web Server 7.0.0 | Fixed | RHSA-2026:39189 |
Not affected: 5 products
- Red Hat Data Grid 8
- Red Hat Hardened Images
- Red Hat JBoss Web Server 7.0 on RHEL 10
- Red Hat JBoss Web Server 7.0 on RHEL 8
- Red Hat JBoss Web Server 7.0 on RHEL 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-41284
- 2026-10-03 Alias added: GHSA-gx5v-xp9w-j4cg
References
Advisory 3
Other 7
- https://github.com/apache/tomcat/commit/17dacd9aa48628da2eba37a9ab743c0b6c71685c
- https://github.com/apache/tomcat/commit/a96fffd18487a29c0a30d36f00cb2b2d91f6d42c
- https://github.com/apache/tomcat/commit/b3d1c1c239142e806be0b7329d304b94a58913ed
- https://github.com/apache/tomcat
- https://tomcat.apache.org/security-10.html
- https://tomcat.apache.org/security-11.html
- https://tomcat.apache.org/security-9.html
More Apache Tomcat vulnerabilities
- TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
- TI-2020-01862 Improper privilege management in Apache Tomcat KEVCVSS 3.1CRITICAL 9.8
- TI-2016-07192 Improper access control in Apache Tomcat KEVCVSS 3.1CRITICAL 9.8
- TI-2017-09342 Unrestricted file upload in Apache Tomcat KEVCVSS 3.1HIGH 8.1
- TI-2017-09340 Unrestricted file upload in Apache Tomcat KEVCVSS 3.1HIGH 8.1
- TI-2026-26741 Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor KEVCVSS 3.1HIGH 7.5
Sources
- CVE-2026-41284 · CVE Program
- CVE-2026-41284 · NVD
- FIRST EPSS
- GHSA-gx5v-xp9w-j4cg · GitHub Advisory Database · CC BY 4.0
- CVE-2026-41284 · Red Hat security data · CC BY 4.0
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