--- id: CVE-2026-50229 title: >- Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess example for Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55,… summary: >- Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess example for Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55,… severity: medium cvss: 6.1 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N' cwe: - CWE-80 - CWE-79 vendor: apache product: tomcat affected: - tomcat <= 7.0.109 - 'tomcat >= 8.5.0, <= 8.5.100' - 'tomcat >= 9.0.0, < 9.0.119' - 'tomcat >= 10.1.0, < 10.1.56' - 'tomcat >= 11.0.0, < 11.0.23' patched: - tomcat 11.0.23 published: '2026-06-29' updated: '2026-07-02' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-50229' references: - url: 'https://lists.apache.org/thread/wlt2no8bw45zl1w8byop4zfqphldf5j0' label: security@apache.org - url: 'http://www.openwall.com/lists/oss-security/2026/06/29/20' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50229.json - url: 'https://access.redhat.com/security/cve/CVE-2026-50229' - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2494688' - url: 'https://www.cve.org/CVERecord?id=CVE-2026-50229' - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-50229' - url: 'https://access.redhat.com/errata/RHSA-2026:67163' - url: 'https://access.redhat.com/errata/RHSA-2026:68651' - url: 'https://access.redhat.com/errata/RHSA-2026:68677' - url: 'https://access.redhat.com/errata/RHSA-2026:68680' - url: 'https://access.redhat.com/errata/RHSA-2026:68678' - url: 'https://access.redhat.com/errata/RHSA-2026:68679' - url: 'https://access.redhat.com/errata/RHSA-2026:68659' - url: 'https://access.redhat.com/errata/RHSA-2026:68660' - url: 'https://access.redhat.com/errata/RHSA-2026:32960' tags: - nvd - exploit-available - csaf - vex - red-hat epss: 0.04091 epssPercentile: 0.90356 ingestedAt: '2026-07-03T13:02:28.097Z' exploits: github: 1 githubRepos: - 'https://github.com/zero-trace7/CVE-2026-50229' nuclei: - CVE-2026-50229 checkedAt: '2026-09-26T09:05:47.138Z' exploitAvailable: true scores: nvd: 6.1 vendor: 5.4 --- ## Overview Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess example for Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue. ## Affected - `tomcat <= 7.0.109` - `tomcat >= 8.5.0, <= 8.5.100` - `tomcat >= 9.0.0, < 9.0.119` - `tomcat >= 10.1.0, < 10.1.56` - `tomcat >= 11.0.0, < 11.0.23` ## Remediation Upgrade past the affected range: - `tomcat 11.0.23` ## Vendor advisories - **RHSA-2026:67163** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0) · released 2026-09-14 · [advisory](https://access.redhat.com/errata/RHSA-2026:67163) - **RHSA-2026:68651** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10) · released 2026-09-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:68651) - **RHSA-2026:68677** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8) · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:68677) - **RHSA-2026:68680** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8) · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:68680) - **RHSA-2026:68678** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.2) · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:68678) - **RHSA-2026:68679** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.4) · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:68679) - **RHSA-2026:68659** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.6) · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:68659) - **RHSA-2026:68660** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9) · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:68660) - **RHSA-2026:32960** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-06-29 · [advisory](https://access.redhat.com/errata/RHSA-2026:32960) - **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat JBoss Web Server 5 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50229.json)