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Response snapshot Nov 3, 2026, 01:01 UTC

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VulnerabilityCVE-2026-40961

Apache Airflow: Authenticated users can bypass the `is_safe_url` check

A bug in the login redirect route in Apache Airflow allowed authenticated users to craft URLs that bypassed the is_safe_url check, enabling redirection from a trusted Airflow domain to an attacker-controlled origin. Users are advised to upgrade to apache-airflow 3.2.2 or later.

At a glance

Exploited
Not known
Severity
7.2 High (CVSS 3.1)
Chance of exploitation
Not estimated
Sources
1 source

What to do

GitHub lists first patched versions: apache-airflow: 3.2.2. Confirm the affected range and upgrade guidance in the exact advisory.

Read GitHub-reviewed advisory GHSA-6hcw-qqr8-pjj8 (opens a new tab)

What happened

A bug in the login redirect route in Apache Airflow allowed authenticated users to craft URLs that bypassed the is_safe_url check, enabling redirection from a trusted Airflow domain to an attacker-controlled origin. Users are advised to upgrade to apache-airflow 3.2.2 or later. As a defense-in-depth mitigation, deployment operators can place Airflow behind a reverse proxy that strips off-domain next= query parameters before they reach the login endpoint.

Affected package ranges reported by GitHub: apache-airflow: >= 3.0.0b3, < 3.2.2

Scores and how they were measured

CVSS base severity

7.2

Version 3.1As of

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

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Related technology

Sources

  1. Primary source

    GitHub-reviewed advisory GHSA-6hcw-qqr8-pjj8 (opens a new tab)

    The public advisory supplies the description, affected package/version ranges, and any listed CVSS metric. GitHub review is not local review.

    Published Checked

  2. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-6hcw-qqr8-pjj8, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, November 2). Apache Airflow: Authenticated users can bypass the `is_safe_url` check (CVE-2026-40961). https://kevwire.com/record/CVE-2026-40961

MLA

"Apache Airflow: Authenticated users can bypass the `is_safe_url` check (CVE-2026-40961)." KEVWire, 2 Nov. 2026, kevwire.com/record/CVE-2026-40961.

Chicago

KEVWire. "Apache Airflow: Authenticated users can bypass the `is_safe_url` check (CVE-2026-40961)." Last modified November 2, 2026. https://kevwire.com/record/CVE-2026-40961.

Evidence summary (plain text)

Apache Airflow: Authenticated users can bypass the `is_safe_url` check (Jun 1, 2026).
A bug in the login redirect route in Apache Airflow allowed authenticated users to craft URLs that bypassed the is_safe_url check, enabling redirection from a trusted Airflow domain to an attacker-controlled origin. Users are advised to upgrade to apache-airflow 3.2.2 or later. As a defense-in-depth mitigation, deployment operators can place Airflow behind a reverse proxy that strips off-domain next= query parameters before they reach the login endpoint.
CVSS 7.2 (version 3.1; evidence as of Nov 2, 2026; https://github.com/advisories/GHSA-6hcw-qqr8-pjj8).
Sources:
GitHub-reviewed advisory GHSA-6hcw-qqr8-pjj8: https://github.com/advisories/GHSA-6hcw-qqr8-pjj8
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc
Record ID: CVE-2026-40961.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Nov 3, 2026, 01:00 UTC. Ingestion is not an independent editorial investigation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

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