---
cve: "CVE-2026-81914"
severity: "MEDIUM"
cvss: 4.3
epss: "0.2%"
vendor: "Apache Software Foundation"
kev: false
exploited: false
published: "2026-09-29 10:17:12"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-01T03:51:04+02:00"
---

# CVE-2026-81914

> 4.3 MEDIUM · 🧪 PoC

## Beschreibung

Apache Airflow's Google provider built Google Drive search expressions by interpolating file and folder names directly into single-quoted string literals, without escaping the quote character that delimits them. A name containing an apostrophe therefore terminated the literal early and appended clauses of the attacker's choosing to the query.

The names are frequently not written by the Dag author. In a wildcard `gcs_to_gdrive` transfer they come from the source bucket listing, so anyone able to create objects in that bucket controls them — typically an external data producer or an ingest-only service account, a different trust principal from the Dag author. An injected clause can broaden the match and so steer which file or folder the hook resolves: an upload can be directed into a folder the attacker named, and, because downloads select the most recently modified match, a download can return a file they placed rather than the one the Dag asked for.

Affects deployments passing externally-sourced names to the Google Drive hook, including wildcard `gcs_to_gdrive` transfers from buckets writable by less-trusted principals. Users are advised to upgrade to `apache-airflow-providers-google` `22.6.0` or later, which escapes quote and backslash characters in every value interpolated into a Drive query.

## CNA-Record (Kanon, cvelistV5)

- CNA: **apache**
- State: PUBLISHED
- Stand: 2026-09-29 20:03:23

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **partial**

## CVSS-Vektor

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

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

## BSI-Hinweise (deutsch)

- [Apache Airflow Providers: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-3630) — _BSI-Einstufung: hoch_
  Ein Angreifer kann mehrere Schwachstellen in verschiedenen Apache Airflow Providern ausnutzen, um Dateien zu manipulieren, um einen SQL-Injection Angriff durchzuführen, um Informationen offenzulegen und um Sicherheitsvorkehrungen zu umgehen.

## Referenzen

- <https://github.com/apache/airflow/pull/72166>
- <https://lists.apache.org/thread/90osv795jrqds051y7v3lcdzhsospooo>
- <http://www.openwall.com/lists/oss-security/2026/09/29/13>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-81914) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_