Evidence used
- No CISA KEV confirmation is currently recorded.
- The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
- EPSS is 0.71% for the current model date.
BlackTreeCVE IntelligenceApache Software Foundation · Apache Tomcat
Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.
Alpine, Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.
A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.
| Distribution release | Source package | Vendor state | Fixed version | Evidence |
|---|---|---|---|---|
| Alpine v3.23v3.23 · community | tomcat-native | Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected. | 2.0.12-r0 | Alpine Security Database ↗Source updated 11 Sep 2026 |
| Debian trixietrixie · source | tomcat10 | Vendor fix publishedDebian records a fixed source-package version for this release. | 10.1.55-1~deb13u1 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian trixietrixie · source | tomcat11 | Vendor fix publishedDebian records a fixed source-package version for this release. | 11.0.22-1~deb13u1 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian trixietrixie · source | tomcat9 | Vendor fix publishedDebian records a fixed source-package version for this release. | 9.0.70-2 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian bookwormbookworm · source | tomcat10 | Vendor fix publishedDebian records a fixed source-package version for this release. | 10.1.55-1~deb12u1 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian bookwormbookworm · source | tomcat9 | Vendor fix publishedDebian records a fixed source-package version for this release. | 9.0.70-2 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian forkyforky · source | tomcat10 | Vendor fix publishedDebian records a fixed source-package version for this release. | 10.1.54-1 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian forkyforky · source | tomcat11 | Vendor fix publishedDebian records a fixed source-package version for this release. | 11.0.21-1 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian forkyforky · source | tomcat9 | Vendor fix publishedDebian records a fixed source-package version for this release. | 9.0.70-2 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian sidsid · source | tomcat10 | Vendor fix publishedDebian records a fixed source-package version for this release. | 10.1.54-1 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian sidsid · source | tomcat11 | Vendor fix publishedDebian records a fixed source-package version for this release. | 11.0.21-1 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian sidsid · source | tomcat9 | Vendor fix publishedDebian records a fixed source-package version for this release. | 9.0.70-2 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Ubuntu 24.04 LTSnoble · esm-apps | tomcat10 | Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing. | Not published in this feed | Canonical Ubuntu Security ↗Source updated 5 Oct 2026 |
These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.
| Ecosystem and package | Affected range | First fixed version | Evidence |
|---|---|---|---|
| Mavenorg.apache.tomcat:tomcat | ECOSYSTEM: introduced 9.0.83; fixed 9.0.116 | 9.0.116 | OSV record ↗aggregator derived · 10 Sep 2026 |
| Mavenorg.apache.tomcat:tomcat | ECOSYSTEM: introduced 10.1.0-M7; fixed 10.1.53 | 10.1.53 | OSV record ↗aggregator derived · 10 Sep 2026 |
| Mavenorg.apache.tomcat:tomcat | ECOSYSTEM: introduced 11.0.0-M1; fixed 11.0.20 | 11.0.20 | OSV record ↗aggregator derived · 10 Sep 2026 |
| Mavenorg.apache.tomcat:tomcat-coyote-ffm | ECOSYSTEM: introduced 9.0.83; fixed 9.0.116 | 9.0.116 | OSV record ↗aggregator derived · 10 Sep 2026 |
| Mavenorg.apache.tomcat:tomcat-coyote-ffm | ECOSYSTEM: introduced 10.1.0-M7; fixed 10.1.53 | 10.1.53 | OSV record ↗aggregator derived · 10 Sep 2026 |
| Mavenorg.apache.tomcat:tomcat-coyote-ffm | ECOSYSTEM: introduced 11.0.0-M1; fixed 11.0.20 | 11.0.20 | OSV record ↗aggregator derived · 10 Sep 2026 |
| mavenorg.apache.tomcat:tomcat | >= 9.0.83, < 9.0.116 | 9.0.116 | GitHub advisory ↗github reviewed aggregator · 20 May 2026 |
| mavenorg.apache.tomcat:tomcat | >= 10.1.0-M7, < 10.1.53 | 10.1.53 | GitHub advisory ↗github reviewed aggregator · 20 May 2026 |
| mavenorg.apache.tomcat:tomcat | >= 11.0.0-M1, < 11.0.20 | 11.0.20 | GitHub advisory ↗github reviewed aggregator · 20 May 2026 |
| mavenorg.apache.tomcat:tomcat-coyote-ffm | >= 9.0.83, < 9.0.116 | 9.0.116 | GitHub advisory ↗github reviewed aggregator · 20 May 2026 |
| mavenorg.apache.tomcat:tomcat-coyote-ffm | >= 10.1.0-M7, < 10.1.53 | 10.1.53 | GitHub advisory ↗github reviewed aggregator · 20 May 2026 |
| mavenorg.apache.tomcat:tomcat-coyote-ffm | >= 11.0.0-M1, < 11.0.20 | 11.0.20 | GitHub advisory ↗github reviewed aggregator · 20 May 2026 |
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
The vendor explicitly identifies these products as affected by this CVE.
Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.
Patch availableCLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M7 through 10.1.52, from 9.0.83 through 9.0.115; Apache Tomcat Native: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39, from 1.3.0 through 1.3.6, from 2.0.0 through 2.0.13. Users are recommended to upgrade to version Tomcat Native 1.3.7 or 2.0.14 and Tomcat 11.0.20, 10.1.53 and 9.0.116, which fix the issue.
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M7 through 10.1.52, from 9.0.83 through 9.0.115; Apache Tomcat Native: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39, from 1.3.0 through 1.3.6, from 2.0.0 through 2.0.13. Users are recommended to upgrade to version Tomcat Native 1.3.7 or 2.0.14 and Tomcat 11.0.20, 10.1.53 and 9.0.116, which fix the issue.
The affected component does not establish the requesting party's identity reliably before granting access.
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M7 through 10.1.52, from 9.0.83 through 9.0.115; Apache Tomcat Native: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39, from 1.3.0 through 1.3.6, from 2.0.0 through 2.0.13. Users are recommended to upgrade to version Tomcat Native 1.3.7 or 2.0.14 and Tomcat 11.0.20, 10.1.53 and 9.0.116, which fix the issue.
The affected component does not establish the requesting party's identity reliably before granting access.
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
CWE-287: Improper Authentication. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NCommon Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
Operational remediation based on structured source evidence.
Linked articles are downloaded and versioned as source evidence. A CVE mention or approved update relationship does not, by itself, verify a fix for every product branch.
Published 9 Apr 2026 · Last source change 10 Apr 2026, 18:11 UTC · CWE-287 · Improper Authentication
Core structured fields are present and their contributing authorities are shown above.