PYSEC-2026-3992
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/apache-airflow/PYSEC-2026-3992.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-3992
- Aliases
- Published
- 2026-08-12T16:17:09Z
- Modified
- 2026-09-28T10:25:34Z
- Severity
-
- 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
Apache Airflow's XCom
GET /api/v2/{...}/xcomEntries/{key}?deserialize=trueendpoint passed a string-literal payload throughBaseXCom.deserialize_valuewithout the_check_forbidden_xcom_keysguard, allowing an authenticated API user with XCom write-and-read access to instantiate arbitraryairflow.*classes on the API server (CWE-502). An authenticated user who can write an XCom value and then read it back withdeserialize=truetriggers the unsafe instantiation. Users are advised to upgrade to apache-airflow 3.3.1 or later, which rejects reserved XCom serialization keys submitted as JSON string literals. - References
Affected packages
PyPI / apache-airflow
Package
- Name
- apache-airflow
- View open source insights on deps.dev
- Purl
- pkg:pypi/apache-airflow
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed3.3.1
Affected versions
1.*
1.8.1
1.8.2rc1
1.8.2
1.9.0
1.10.0
1.10.1b1
1.10.1rc2
1.10.1
1.10.2b2
1.10.2rc1
1.10.2rc2
1.10.2rc3
1.10.2
1.10.3b1
1.10.3b2
1.10.3rc1
1.10.3rc2
1.10.3
1.10.4b2
1.10.4rc1
1.10.4rc2
1.10.4rc3
1.10.4rc4
1.10.4rc5
1.10.4
1.10.5rc1
1.10.5
1.10.6rc1
1.10.6rc2
1.10.6
1.10.7rc1
1.10.7rc2
1.10.7rc3
1.10.7
1.10.8rc1
1.10.8
1.10.9rc1
1.10.9
1.10.10rc1
1.10.10rc2
1.10.10rc3
1.10.10rc4
1.10.10rc5
1.10.10
1.10.11rc1
1.10.11rc2
1.10.11
1.10.12rc1
1.10.12rc2
1.10.12rc3
1.10.12rc4
1.10.12
1.10.13rc1
1.10.13
1.10.14rc1
1.10.14rc2
1.10.14rc3
1.10.14rc4
1.10.14
1.10.15rc1
1.10.15
2.*
2.0.0b1
2.0.0b2
2.0.0b3
2.0.0rc1
2.0.0rc2
2.0.0rc3
2.0.0
2.0.1rc1
2.0.1rc2
2.0.1
2.0.2rc1
2.0.2
2.1.0rc1
2.1.0rc2
2.1.0
2.1.1rc1
2.1.1
2.1.2rc1
2.1.2
2.1.3rc1
2.1.3
2.1.4rc1
2.1.4rc2
2.1.4
2.2.0b1
2.2.0b2
2.2.0rc1
2.2.0
2.2.1rc1
2.2.1rc2
2.2.1
2.2.2rc1
2.2.2rc2
2.2.2
2.2.3rc1
2.2.3rc2
2.2.3
2.2.4rc1
2.2.4
2.2.5rc1
2.2.5rc2
2.2.5rc3
2.2.5
2.3.0b1
2.3.0rc1
2.3.0rc2
2.3.0
2.3.1rc1
2.3.1
2.3.2rc1
2.3.2rc2
2.3.2
2.3.3rc1
2.3.3rc2
2.3.3rc3
2.3.3
2.3.4rc1
2.3.4
2.4.0b1
2.4.0rc1
2.4.0
2.4.1rc1
2.4.1
2.4.2rc1
2.4.2
2.4.3rc1
2.4.3
2.5.0rc1
2.5.0rc2
2.5.0rc3
2.5.0
2.5.1rc1
2.5.1rc2
2.5.1
2.5.2rc1
2.5.2rc2
2.5.2
2.5.3rc1
2.5.3rc2
2.5.3
2.6.0b1
2.6.0rc1
2.6.0rc2
2.6.0rc3
2.6.0rc4
2.6.0rc5
2.6.0
2.6.1rc1
2.6.1rc2
2.6.1rc3
2.6.1
2.6.2rc1
2.6.2rc2
2.6.2
2.6.3rc1
2.6.3
2.7.0b1
2.7.0rc1
2.7.0rc2
2.7.0
2.7.1rc1
2.7.1rc2
2.7.1
2.7.2rc1
2.7.2
2.7.3rc1
2.7.3
2.8.0b1
2.8.0rc1
2.8.0rc2
2.8.0rc3
2.8.0rc4
2.8.0
2.8.1rc1
2.8.1
2.8.2rc1
2.8.2rc2
2.8.2rc3
2.8.2
2.8.3rc1
2.8.3
2.8.4rc1
2.8.4
2.9.0b1
2.9.0b2
2.9.0rc1
2.9.0rc2
2.9.0rc3
2.9.0
2.9.1rc1
2.9.1rc2
2.9.1
2.9.2rc1
2.9.2
2.9.3rc1
2.9.3
2.10.0b1
2.10.0b2
2.10.0rc1
2.10.0
2.10.1rc1
2.10.1
2.10.2rc1
2.10.2
2.10.3rc1
2.10.3rc2
2.10.3
2.10.4rc1
2.10.4
2.10.5rc1
2.10.5
2.11.0rc1
2.11.0
2.11.1rc1
2.11.1rc2
2.11.1
2.11.2rc1
2.11.2
3.*
3.0.0b4
3.0.0rc1
3.0.0rc1.post1
3.0.0rc1.post2
3.0.0rc1.post3
3.0.0rc1.post4
3.0.0rc2
3.0.0rc3
3.0.0rc4
3.0.0
3.0.1rc1
3.0.1
3.0.2rc1
3.0.2rc2
3.0.2
3.0.3rc1
3.0.3rc2
3.0.3rc3
3.0.3rc4
3.0.3rc5
3.0.3rc6
3.0.3
3.0.4rc1
3.0.4rc2
3.0.4
3.0.5rc1
3.0.5rc2
3.0.5rc3
3.0.5
3.0.6rc1
3.0.6rc2
3.0.6
3.1.0b1
3.1.0b2
3.1.0rc1
3.1.0rc2
3.1.0
3.1.1rc1
3.1.1rc2
3.1.1
3.1.2rc1
3.1.2rc2
3.1.2
3.1.3rc1
3.1.3
3.1.4rc1
3.1.4rc2
3.1.4
3.1.5rc1
3.1.5
3.1.6rc1
3.1.6
3.1.7rc1
3.1.7rc2
3.1.7
3.1.8rc1
3.1.8rc2
3.1.8
3.2.0b1
3.2.0b2
3.2.0rc1
3.2.0rc2
3.2.0
3.2.1rc1
3.2.1rc2
3.2.1rc3
3.2.1
3.2.2rc1
3.2.2rc2
3.2.2rc3
3.2.2
3.3.0b1
3.3.0b2
3.3.0rc1
3.3.0rc2
3.3.0
3.3.1rc1
3.3.1rc2