CVE-2026-34538Disclosure(apache / airflow)

LOWCVSS 6.5 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Apache Airflow versions 3.0.0 through 3.1.8 DagRun wait endpoint returns XCom result values even to users who only have DAG Run read permissions, such as the Viewer role.This behavior conflicts with the FAB RBAC model, which treats XCom as a separate protected resource, and with the security model documentation that defines the Viewer role as read-only. Airflow uses the FAB Auth Manager to manage access control on a per-resource basis. The Viewer role is intended to be read-only by default, and the security model documentation defines Viewer users as those who can inspect DAGs without accessing sensitive execution results. Users are recommended to upgrade to Apache Airflow 3.2.0 which resolves this issue.

apache CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

Other references

https://github.com/apache/airflow/pull/64415

Weakness type (CWE)

CWE-668

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

airflow

Threat summary

4 mentions across 2 observed days
Momentum state: stable

What's happening

Technical details provided in 3 signals
Disclosure: 2 classified signals
General: 2 classified signals
Peaked 1d ago at 2 mentions (2026-04-09); latest day: 2
4 total mentions across 2 days

Affected systems

Vendors

apache

Products

airflow

Deep dive

Activity timeline4 mentions / 2d

Signal classification2 categories

Disclosure

250.0%

General

250.0%

Referenced assets5 URLs

By indicator

Classification over time

Date	Total	Labels

2026-04-09	2	Disclosure2
2026-04-10	2	General2

Full discourse4 posts

Open Source Security mailing list@oss_security182d
General
CVE-2026-34538: Apache Airflow: Authorization bypass in DagRun wait endpoint (XCom exposure) https://www.openwall.com/lists/oss-security/2026/04/09/9 CVE-2025-57735: Apache Airflow: Airflow Logout Not Invalidating JWT https://www.openwall.com/lists/oss-security/2026/04/09/16 Both are "Severity: low"
Post summary
The text lists two low‑severity Apache Airflow CVEs with short descriptors and links, but provides no PoC, exploit, patch, or active‑exploitation information.
01050737
4.6K followersView on X
CVEarity@CVEarity182d
General
⚡ New CVE Alert: CVE-2026-34538 🚨 Risk Level: Unknown 🧩 Affects: Apache Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-34538 #CVE-2026-34538 #CVE #Apache #CyberSecurity #InfoSec https://t.co/ZHZvjDSfdC
Post summary
The tweet simply announces the existence of CVE-2026-34538 for Apache with no technical details, exploitation information, or remediation steps.
0000031
123 followersView on X
Infoflowcloud@infoflowcloud183d
Disclosure
🚨*CVE* CVE-2026-34538 Apache Airflow versions 3.0.0 through 3.1.8 DagRun wait endpoint returns XCom result values even to users who only have DAG Run read permissions, such as the Viewer r… https://www.cve.org/CVERecord?id=CVE-2026-34538 ----- Traducción: CVE-2026-34538 Apa… http://infoflow.cloud`
Post summary
The post announces CVE‑2026‑34538, noting that Apache Airflow 3.0.0–3.1.8’s DagRun wait endpoint leaks XCom results to users with only read permissions.
0000035
67 followersView on X
CVE@CVEnew183d
Disclosure
CVE-2026-34538 Apache Airflow versions 3.0.0 through 3.1.8 DagRun wait endpoint returns XCom result values even to users who only have DAG Run read permissions, such as the Viewer r… https://www.cve.org/CVERecord?id=CVE-2026-34538
Post summary
The tweet announces CVE-2026-34538, revealing that Apache Airflow's DagRun wait endpoint unintentionally exposes XCom result values to users with only read access.
00000274
57.0K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	apache	airflow	-	-	-

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What researchers are saying

CVE-2026-34538

Open Source Security mailing list@oss_securityGeneral

The text lists two low‑severity Apache Airflow CVEs with short descriptors and links, but provides no PoC, exploit, patch, or active‑exploitation information.

CVEarity@CVEarityGeneral

The tweet simply announces the existence of CVE-2026-34538 for Apache with no technical details, exploitation information, or remediation steps.

Infoflowcloud@infoflowcloudDisclosure

The post announces CVE‑2026‑34538, noting that Apache Airflow 3.0.0–3.1.8’s DagRun wait endpoint leaks XCom results to users with only read permissions.

CVE@CVEnewDisclosure

The tweet announces CVE-2026-34538, revealing that Apache Airflow's DagRun wait endpoint unintentionally exposes XCom result values to users with only read access.