October 21, 2026

CVE Watchtower

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CVE-2026-65637NVD

Vulnerability Summary

Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990.



This issue affects Apache Tomcat: from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, from 9.0.115 through 9.0.120.



Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
Severity Level
CRITICAL(9.8)
Published Date
Aug 25, 2026
Last Modified
Aug 27, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.74%Probability
Root Weakness (CWE)
CWE-20: Improper Input Validation ↗
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required.
CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Apache Tomcat >= 9.0.115 and < 9.0.121
  • Apache Tomcat >= 10.1.53 and < 10.1.58
  • Apache Tomcat >= 11.0.20 and < 11.0.25
Patched Versions
  • Apache Tomcat 9.0.121
  • Apache Tomcat 10.1.58
  • Apache Tomcat 11.0.25
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🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
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External References