---
cve: "CVE-2026-68763"
severity: "HIGH"
cvss: 7.5
epss: "20.4%"
vendor: "Apache"
kev: false
exploited: false
published: "2026-08-25 22:17:05"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T00:03:32+02:00"
---

# CVE-2026-68763

> 7.5 HIGH

## Beschreibung

Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset



This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120.



The following versions were EOL at the time the CVE was created but are 
known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected.



Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 4f33a9eca48c5cbf5963dd213b74866e629154ad (Commit)
- 5da21b1c24a6443bca5c10dc80a69a76042ca337 (Commit)

## Referenzen

- <https://lists.apache.org/thread/tv51ty39ppv41v04hdtkp9dp7tg02nzl>
- <http://www.openwall.com/lists/oss-security/2026/08/26/9>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-68763) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_