CVE-2026-86473
criticalpriority · track · 0EPSS 0.007 · 55 %ileDEUSEPSS · scored 2026-10-27
Apache Airflow: the Core API logout endpoint revokes only a session token presented as the _token cookie. When a client logs out presenting its credential as an Authorization bearer header instead, the endpoint returns its normal logout response but revokes nothing, so the token remains valid until it expires. An attacker who already holds a copy of that token keeps the victim's access after the victim has logged out and believes the session ended; the default token lifetime is 24 hours and is configurable. Affects API clients that authenticate with a bearer token rather than the browser session cookie. The attacker must already possess a copy of a valid token; obtaining one is outside the scope of this issue, and no privileges beyond the victim's own are gained. Users of apache-airflow are recommended to upgrade to apache-airflow version 3.3.2 or later, which fixes the issue.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.3–9.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (5)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-3493Apache Airflow: Mehrere SchwachstellenDeutsch2026-09-21csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Apache Airflow ausnutzen, um Informationen offenzulegen, falsche Informationen darzustellen oder Sicherheitsmaßnahmen zu umgehen.
- BIT-airflow-2026-86473Apache Airflow: Logout ignores a presented Authorization bearer token, leaving it revocable only by expiry2026-09-26vendor · osvUS
Apache Airflow: the Core API logout endpoint revokes only a session token presented as the _token cookie. When a client logs out presenting its credential as an Authorization bearer header instead, the endpoint returns its normal logout response but revokes nothing, so the token remains valid until it expires. An attacker who already holds a copy of that token keeps the victim's access after the victim has logged out and believes the session ended; the default token lifetime is 24 hours and is configurable. Affects API clients that authenticate with a bearer token rather than the browser session cookie. The attacker must already possess a copy of a valid token; obtaining one is outside the scope of this issue, and no privileges beyond the victim's own are gained. Users of apache-airflow are recommended to upgrade to apache-airflow version 3.3.2 or later, which fixes the issue.
- PYSEC-2026-39902026-09-21vendor · osvUS
Apache Airflow: the Core API logout endpoint revokes only a session token presented as the _token cookie. When a client logs out presenting its credential as an Authorization bearer header instead, the endpoint returns its normal logout response but revokes nothing, so the token remains valid until it expires. An attacker who already holds a copy of that token keeps the victim's access after the victim has logged out and believes the session ended; the default token lifetime is 24 hours and is configurable. Affects API clients that authenticate with a bearer token rather than the browser session cookie. The attacker must already possess a copy of a valid token; obtaining one is outside the scope of this issue, and no privileges beyond the victim's own are gained. Users of apache-airflow are recommended to upgrade to apache-airflow version 3.3.2 or later, which fixes the issue.
also known as (2)
Other names and identifiers for this entity.
- BIT-airflow-2026-86473osv
- PYSEC-2026-3990osv
sources
Which sources assert this record, and when.
references (3) nvd
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2026/09/21/5Mailing ListThird Party Advisory
- https://github.com/apache/airflow/pull/72649Issue TrackingVendor Advisory
- https://lists.apache.org/thread/k9z1p0q1ng8m68nlnv9d1fqzscrfm7vrMailing ListVendor Advisory
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