VulnerabilityPublished 21 Sep 2026Updated 3 Nov 2026

CVE-2026-86473: Apache Airflow · DEPRECATED: Insufficient Session Expiration

Affects Apache AirflowSource CVE Database V5

Compare

Not known to be exploited · CVSS 9.1 Critical : upgrade to 3.3.2 as a priority.

Data as of 5 Nov 2026, 11:40 UTC

CVSS 3.1 base score

9.1Critical

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	9.1

EPSS: 0.7% chance of exploitation in 30 days – higher than 54% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 3.3.2

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
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: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
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: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to 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 and apache-airflow-core to 3.3.2.

Affected software

Product	Affected	Fixed in
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 >=3.0.0 <3.3.2	Fixed in 3.3.2
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 issue is fixed. No other mitigations are indicated. Users relying on bearer token authentication should ensure they apply this update to prevent token reuse after logout.

Description

Apache Airflow versions 3.0.0 through 3.3.1 have an insufficient session expiration vulnerability in the Core API logout endpoint. When API clients authenticate using a bearer token in the Authorization header, logging out does not revoke the token, allowing it to remain valid until its configured expiration (default 24 hours). An attacker with a copy of a valid token can maintain access after the victim logs out. This issue is fixed in Apache Airflow 3.3.2.

Impact

An attacker who has obtained a valid bearer token prior to the victim's logout can continue to access the victim's session until the token expires, which by default is 24 hours. This undermines the logout mechanism's effectiveness, potentially allowing unauthorized access to the victim's API session. However, the attacker gains no additional privileges beyond those of the victim. The vulnerability does not affect browser session cookie authentication.

CWE-613DEPRECATED: Insufficient Session Expiration (opens in a new tab)
Base weaknessOWASP Top 10 A07:2025: Authentication Failures (opens in a new tab)
This entry has been deprecated because it was insufficiently clear. Consider CWE-1462 and its descendants.
MITRE does not allow mapping vulnerabilities to this entry; it groups weaknesses rather than naming one.
OWASP Cheat Sheets
OWASP Authentication (opens in a new tab)
OWASP ASVS 4.0.3
V2.8.1 (opens in a new tab)
V2.8.6 (opens in a new tab)
V3.6.1 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

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

WeaknessesCWE-613

Technical details

References

Community reviews

Related threats