---
cve: "CVE-2026-73179"
severity: "HIGH"
cvss: 8.1
epss: "0.2%"
vendor: "Apache Software Foundation"
kev: false
exploited: false
published: "2026-10-09 11:17:02"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-24T06:57:35+02:00"
---

# CVE-2026-73179

> 8.1 HIGH

## Beschreibung

Improper enforcement of single-use authorization code semantics in the JPA OAuth2 authorization code grant provider in Apache CXFallows a remote attacker to obtain multiple valid access tokens from a single authorization code via concurrent token exchange requests that race the non-atomic find-then-delete operation against a shared relational database under READ_COMMITTED isolation. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fixes this issue.

## CNA-Record (Kanon, cvelistV5)

- CNA: **apache**
- State: PUBLISHED
- Stand: 2026-10-15 16:10:24

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

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

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

## Schwachstellen-Klasse

- **CWE-367** — Time-of-check Time-of-use (TOCTOU) Race Condition
  The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.

## Angriffsmuster (CAPEC)

- [CAPEC-27 — Leveraging Race Conditions via Symbolic Links](https://capec.mitre.org/data/definitions/27.html) _(Severity: High)_
- [CAPEC-29 — Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions](https://capec.mitre.org/data/definitions/29.html) _(Severity: High)_

## BSI-Hinweise (deutsch)

- [Apache CXF: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-3824) — _BSI-Einstufung: hoch_
  Ein Angreifer kann mehrere Schwachstellen in Apache CXF ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren und offenzulegen, Benutzer auf vom Angreifer kontrollierte Websites umzuleiten oder Denial-of-Service-Zustände auszulösen.

## Referenzen

- <https://lists.apache.org/thread.html/6msbm601o6ogfgdzdbtbrmgspmz50nxk>
- <http://www.openwall.com/lists/oss-security/2026/10/09/5>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-73179/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_