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 0.53% for the current model date.
BlackTreeCVE IntelligenceApache Software Foundation · Apache Tomcat
Low technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 37 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
Verified remediation exists for at least one product or source, but 37 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
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 |
|---|---|---|---|---|
| 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. | 10.1.55-1 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian forkyforky · source | tomcat11 | Vendor fix publishedDebian records a fixed source-package version for this release. | 11.0.22-1 | 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. | 10.1.55-1 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian sidsid · source | tomcat11 | Vendor fix publishedDebian records a fixed source-package version for this release. | 11.0.22-1 | 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 |
| Ubuntu 24.04 LTSnoble · esm-apps | tomcat9 | 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.embed:tomcat-embed-core | ECOSYSTEM: introduced 0; fixed 9.0.118 | 9.0.118 | OSV record ↗aggregator derived · 11 Sep 2026 |
| Mavenorg.apache.tomcat.embed:tomcat-embed-core | ECOSYSTEM: introduced 10.1.0-M1; fixed 10.1.55 | 10.1.55 | OSV record ↗aggregator derived · 11 Sep 2026 |
| Mavenorg.apache.tomcat.embed:tomcat-embed-core | ECOSYSTEM: introduced 11.0.0-M1; fixed 11.0.22 | 11.0.22 | OSV record ↗aggregator derived · 11 Sep 2026 |
| Mavenorg.apache.tomcat:tomcat | ECOSYSTEM: introduced 0; fixed 9.0.118 | 9.0.118 | OSV record ↗aggregator derived · 11 Sep 2026 |
| Mavenorg.apache.tomcat:tomcat | ECOSYSTEM: introduced 10.1.0-M1; fixed 10.1.55 | 10.1.55 | OSV record ↗aggregator derived · 11 Sep 2026 |
| Mavenorg.apache.tomcat:tomcat | ECOSYSTEM: introduced 11.0.0-M1; fixed 11.0.22 | 11.0.22 | OSV record ↗aggregator derived · 11 Sep 2026 |
| Mavenorg.apache.tomcat:tomcat-catalina | ECOSYSTEM: introduced 0; fixed 9.0.118 | 9.0.118 | OSV record ↗aggregator derived · 11 Sep 2026 |
| Mavenorg.apache.tomcat:tomcat-catalina | ECOSYSTEM: introduced 10.1.0-M1; fixed 10.1.55 | 10.1.55 | OSV record ↗aggregator derived · 11 Sep 2026 |
| Mavenorg.apache.tomcat:tomcat-catalina | ECOSYSTEM: introduced 11.0.0-M1; fixed 11.0.22 | 11.0.22 | OSV record ↗aggregator derived · 11 Sep 2026 |
| mavenorg.apache.tomcat.embed:tomcat-embed-core | < 9.0.118 | 9.0.118 | GitHub advisory ↗github reviewed aggregator · 19 May 2026 |
| mavenorg.apache.tomcat.embed:tomcat-embed-core | >= 10.1.0-M1, < 10.1.55 | 10.1.55 | GitHub advisory ↗github reviewed aggregator · 19 May 2026 |
| mavenorg.apache.tomcat.embed:tomcat-embed-core | >= 11.0.0-M1, < 11.0.22 | 11.0.22 | GitHub advisory ↗github reviewed aggregator · 19 May 2026 |
| mavenorg.apache.tomcat:tomcat | < 9.0.118 | 9.0.118 | GitHub advisory ↗github reviewed aggregator · 19 May 2026 |
| mavenorg.apache.tomcat:tomcat | >= 10.1.0-M1, < 10.1.55 | 10.1.55 | GitHub advisory ↗github reviewed aggregator · 19 May 2026 |
| mavenorg.apache.tomcat:tomcat | >= 11.0.0-M1, < 11.0.22 | 11.0.22 | GitHub advisory ↗github reviewed aggregator · 19 May 2026 |
| mavenorg.apache.tomcat:tomcat-catalina | < 9.0.118 | 9.0.118 | GitHub advisory ↗github reviewed aggregator · 19 May 2026 |
| mavenorg.apache.tomcat:tomcat-catalina | >= 10.1.0-M1, < 10.1.55 | 10.1.55 | GitHub advisory ↗github reviewed aggregator · 19 May 2026 |
| mavenorg.apache.tomcat:tomcat-catalina | >= 11.0.0-M1, < 11.0.22 | 11.0.22 | GitHub advisory ↗github reviewed aggregator · 19 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.
Low technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 37 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
Fix availability varies by productObservable Timing Discrepancy vulnerability when comparing AJP secret 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, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
Observable Timing Discrepancy vulnerability when comparing AJP secret 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, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.
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.
Observable Timing Discrepancy vulnerability when comparing AJP secret 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, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.
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-208: Observable Timing Discrepancy. Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:NCommon Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
Operational remediation based on structured source evidence.
Published 12 May 2026 · Last source change 13 May 2026, 17:22 UTC · CWE-208 · Observable Timing Discrepancy
Core structured fields are present and their contributing authorities are shown above.