Search/CVE-2026-43515
● CVE — Critical

CVE-2026-43515

VendorapacheProducttomcatDiscoveredMay 12, 2026UpdatedOct 26, 2026

Improper Authorization vulnerability when multiple method constraints define an HTTP method for the same extension 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. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

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CVSS v3.1
9.1 CRITICAL
EPSS
1.22%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
3
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Sep 16, 2026 → Sep 26, 2026
● 0.00pp
1.22% → 1.22% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Connections
5 relationships
Timeline
disclosure → media coverage
May 12, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 26, 2026
Jun 10, 2026
ubuntu.com reports: USN-8417-1: Tomcat vulnerabilities
Jun 18, 2026
ubuntu.com reports: USN-8450-1: Tomcat vulnerabilities
Jul 15, 2026
ubuntu.com reports: USN-8551-1: Tomcat vulnerabilities
Public PoC (1)
github.com/covepseng/cve-2026-43515-poc
Unverified third-party code — review before executing.