CVE-2026-41017Network attack vector

Session hijacking via missing Secure cookie flag

Published Jun 1, 2026 · Updated Jun 1, 2026

Cookie security failure in Apache Airflow 3.0.0 through 3.2.1 allows man-in-the-middle attackers to steal authenticated session JWTs. JWTRefreshMiddleware derived the cookie's Secure attribute only from api.ssl_cert and ignored the HTTPS request scheme, allowing browsers to send it over cleartext HTTP. Exploitation requires TLS termination at a reverse proxy, no local API certificate, a logged-in browser, and an induced HTTP request to the same host; replay grants the victim's API session.

CVSS severity5.9
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cookie security failure in Apache Airflow 3.0.0 through 3.2.1 allows man-in-the-middle attackers to steal authenticated session JWTs. JWTRefreshMiddleware derived the cookie's Secure attribute only from api.ssl_cert and ignored the HTTPS request scheme, allowing browsers to send it over cleartext HTTP. Exploitation requires TLS termination at a reverse proxy, no local API certificate, a logged-in browser, and an induced HTTP request to the same host; replay grants the victim's API session.

The record

CVE
CVE-2026-41017
Published
Jun 1, 2026
Updated
Jun 1, 2026
Vendor
The Apache Software Foundation
Product
Apache Airflow
Classifications
CWE-614, T1539
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0.0 <3.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Airflowversion=3.0.0 <3.2.2

Published CVSS scores

5.9NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
5.9CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-614Sensitive Cookie in HTTPS Session Without 'Secure' Attribute
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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