VulnerabilityPublished 21 Sep 2026Updated 3 Nov 2026

CVE-2026-75158: Apache Airflow · Information Exposure

Affects Apache AirflowSource CVE Database V5

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Not known to be exploited · CVSS 4.3 Medium : upgrade to 3.0.0 when convenient.

Data as of 5 Nov 2026, 11:40 UTC

CVSS 3.1 base score

4.3Medium

How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none

CVSS scores by source
CISA-ADP	CVSS 3.1	4.3

EPSS: 0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 3.0.0, 3.3.2

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 21 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Apache Airflow and apache-airflow to 3.0.0; Apache Airflow and apache-airflow and apache-airflow-core to 3.3.2.

Affected software

Product	Affected	Fixed in
Apache Airflowapache-airflow	Affected <3.0.0	Fixed in 3.0.0
Apache Airflowapache-airflow-core	Affected >=3.0.0 <3.3.2	Fixed in 3.3.2
PyPIapache-airflow`pkg:pypi/apache-airflow`Other threats	Affected <3.3.2	Fixed in 3.3.2
PyPIapache-airflow`pkg:pypi/apache-airflow`Other threats	Affected <3.0.0	Fixed in 3.0.0
PyPIapache-airflow-core`pkg:pypi/apache-airflow-core`Other threats	Affected >=3.0.0 <3.3.2	Fixed in 3.3.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade Apache Airflow to version 3.3.2 or later, where this vulnerability is fixed. No special configuration is required to mitigate the issue beyond applying the official patch. Deployments using per-DAG access control should prioritize this update to prevent unauthorized information disclosure.

Description

Apache Airflow versions prior to 3.3.2 have an information exposure vulnerability in the /assets/events API. Authenticated users with asset-read access can enumerate asset events for all DAGs, including those they are not authorized to view, due to missing access control filters. This exposure includes sensitive metadata such as source DAG ID, task ID, run ID, and event timestamps. Pagination and total entry counts also reveal the existence of hidden DAGs. This affects deployments using per-DAG access control without requiring special configuration. The issue is fixed in Apache Airflow 3.3.2 and later.

Impact

An attacker with authenticated asset-read access can enumerate and gain knowledge about DAGs they are not authorized to see, including sensitive identifiers and event timestamps. This information disclosure could aid in reconnaissance or further attacks but does not allow modification or denial of service. The CVSS score is 4.3 (medium severity), reflecting limited confidentiality impact without integrity or availability effects.

Summary

The vulnerability (CVE-2026-75158) in Apache Airflow's /assets/events API allows authenticated users with asset-read permissions to access asset event data for all DAGs in the deployment, regardless of their authorization. The API lacks filtering to restrict returned events to only those DAGs the caller is permitted to access. This results in unauthorized disclosure of sensitive information including DAG IDs, task IDs, run IDs, and event timestamps. Additionally, the total_entries count and pagination mechanisms disclose the presence of DAGs that the user should not be aware of. This flaw affects all versions before 3.3.2 where per-DAG access control is used. The vulnerability is classified under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor).

CWE-200Exposure of Sensitive Information to an Unauthorized Actor (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #20OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Architecture and Design · Separation of Privilege
Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
OWASP Cheat Sheets
Error Handling (opens in a new tab)
Logging (opens in a new tab)
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V8.3.4 (opens in a new tab)
V14.3.3 (opens in a new tab)
V7.3.3 (opens in a new tab)
Attack patterns
Subverting Environment Variable Values (opens in a new tab)
ICMP Echo Request Ping (opens in a new tab)
TCP SYN Scan (opens in a new tab)
Enumerate Mail Exchange (MX) Records (opens in a new tab)
DNS Zone Transfers (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Nov 2026, 11:14 UTC

WeaknessesCWE-200

Technical details

References

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