No exploitation reportedFix available

CVE-2026-41284

Q: Is CVE-2026-41284 actively exploited?

Active exploitation of CVE-2026-41284 has not been confirmed. Its EPSS score was 0.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2026-41284?

CVE-2026-41284 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2026-05-12
Fixed in11.0.22 · 10.1.55 · 9.0.118
WeaknessCWE-770

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2026-05-1216:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-41284?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-41284?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Apache Tomcat

Branch	Affected	Fixed in	Source
11.0	≥ 11.0.0, < 11.0.22	11.0.22	NVD
10.1	≥ 10.1.0, < 10.1.55	10.1.55	NVD
9.0	≥ 9.0.0, < 9.0.118	9.0.118	NVD
7.0	≥ 4.0.0, ≤ 7.0.109	no fix published	NVD
8.5	≥ 8.5.0, ≤ 8.5.100	no fix published	NVD
10.0	≥ 10.0.0, ≤ 10.0.27	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

RHSA-2026:68651 Red Hat Product Security9 products fixed
Red Hat Security Advisory: tomcat9 security update
RHSA-2026:68677 Red Hat Product Security9 products fixed
Red Hat Security Advisory: tomcat security update
RHSA-2026:68660 Red Hat Product Security9 products fixed
Red Hat Security Advisory: tomcat security, bug fix, and enhancement update
RHSA-2026:68659 Red Hat Product Security9 products fixed
Red Hat Security Advisory: tomcat security update
RHSA-2026:68678 Red Hat Product Security9 products fixed
Red Hat Security Advisory: tomcat security update
RHSA-2026:68679 Red Hat Product Security9 products fixed
Red Hat Security Advisory: tomcat security update

8 more advisories

Full record on NVD

Fix

Update Apache Tomcat to 11.0.22 · 10.1.55 · 9.0.118
Vendor fix Red Hat Product Security RHSA-2026:68651 · 9 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Vendor fix Red Hat Product Security RHSA-2026:68258 · 21 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
Vendor fix Red Hat Product Security RHSA-2026:43401 · 33 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
Vendor fix Red Hat Product Security RHSA-2026:43402 · 1 productBefore applying the update, back up your existing Red Hat JBoss Web Server installation, including all applications and configuration files. The References section of this erratum contains a download link for the update. You must be logged in to download the update.

Advisories and patches

lists.apache.orgVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionnone2026-05-13
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.17.52026-05-13
CNAweakness (CWE)CWE-770read 2026-10-23
FIRST EPSSEPSS score0.8 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2026-05-12
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2026-41284?

Is CVE-2026-41284 actively exploited?

Active exploitation of CVE-2026-41284 has not been confirmed. Its EPSS score was 0.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-41284?

CVE-2026-41284 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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