CVE-2026-113504 (CVSS 6.5)

Description

Apache Airflow's secrets masker stopped descending into nested structures after five levels, so a secret registered with the masker — for example a Connection password or a Variable value — that appeared more than five containers deep under non-sensitive keys was shown in cleartext in task logs and rendered template fields. A user who can read task logs or rendered templates, but is not meant to see those secrets, could read them. Users are advised to upgrade to apache-airflow 3.4.0 or later. Airflow 2.x is also affected; Airflow 2 has reached end of life and will not receive a fix, so Airflow 2 users should upgrade to Apache Airflow 3.4.0 or later.

Is your site exposed to CVE-2026-113504?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

6.5

MEDIUM

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

EPSS — Exploit Prediction

0.0023

Probability of exploitation

0.14%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-497 CWE-497

References

Other References

https://github.com/apache/airflow/pull/73793 https://lists.apache.org/thread.html/c0bzrpq913qh7srwdmx0smvt1tgvthrr http://www.openwall.com/lists/oss-security/2026/11/09/19

Frequently Asked Questions

What is CVE-2026-113504? +

Apache Airflow's secrets masker stopped descending into nested structures after five levels, so a secret registered with the masker — for example a Connection password or a Variable value — that appeared more than five containers deep under non-sensitive keys was shown in cleartext in task logs and rendered template fields. A user who can read task logs or rendered templates, but is not meant to see those secrets, could read them. Users are advised to upgrade to apache-airflow 3.4.0 or later. Airflow 2.x is also affected; Airflow 2 has reached end of life and will not receive a fix, so Airflow 2 users should upgrade to Apache Airflow 3.4.0 or later. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-113504? +

CVE-2026-113504 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0023, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-113504? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-15623

Exposure of Private Personal Information to an Unauthorized Actor, : Exposure of Sensitive System Information to an Unauthorized Control Sphere …

CVE-2026-9307

A sensitive information disclosure security issue exists within the affected CompactLogix controllers. The controller's web server exposes CIP Connection IDs …

CVE-2024-8313

An Exposure of Sensitive System Information to an Unauthorized Control Sphere and Initialization of a Resource with an Insecure Default …

CVE-2025-32792

SES safely executes third-party JavaScript 'strict' mode programs in compartments that have no excess authority in their global scope. Prior …

CVE-2025-4364

The affected products could allow an unauthenticated attacker to access system information that could enable further access to sensitive files …

CVE-2025-2236

Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in OpenText Advanced Authentication allows Information Elicitation. The vulnerability …