CVE-2026-25917 json
Apache Airflow: API extra-links triggers XCom deserialization/class instantiation (Airflow 3.1.5)
published 6mo ago modified 6d ago also BIT-airflow-2026-25917 , EUVD-2026-23658 , GHSA-6ffj-2wg2-w45j , PYSEC-2026-13 , PYSEC-2026-2359
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
Summary
Dag Authors, who normally should not be able to execute code in the webserver context could craft XCom payload causing the webserver to execute arbitrary code. Since Dag Authors are already highly trusted, severity of this issue is Low.
Users are recommended to upgrade to Apache Airflow 3.2.0, which fixes the issue.
Patch / fix
- pypi apache-airflow-core 3.2.0
- bitnami airflow 3.2.0
- pypi apache-airflow 3.2.0
- Apache Software Foundation Apache Airflow 3.0.0, 3.2.0
- github.com/apache/airflow#61641 pull request
Is CVE-2026-25917 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 6mo ago
Exploit prediction
0.82% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| OSV | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | apache-airflow-core | <3.2.0 |
3.2.0 |
| bitnami | airflow | <3.2.0 |
3.2.0 |
| pypi | apache-airflow | <3.2.0 |
3.2.0 |
Affected products
- Apache Software Foundation Apache Airflow
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
github.com
/apache/airflow/pull/61641
patch, web, issue-tracking, report
-
lists.apache.org
/thread/6whgpkqbh12rvpfmvcg8b0vwlv4hq3po
vendor-advisory, web, mailing-list, advisory
-
openwall.com
/lists/oss-security/2026/04/17/9
web, mailing-list, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-25917
advisory, web
-
github.com
/apache/airflow
package
-
github.com
/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-13.yaml
web
-
pypi.org
/project/apache-airflow-core
package
-
github.com
/advisories/GHSA-6ffj-2wg2-w45j
advisory
Sources
- CVE List CVE-2026-25917
- GitHub Advisory GHSA-6ffj-2wg2-w45j
- NVD CVE-2026-25917
- OSV BIT-airflow-2026-25917
- OSV PYSEC-2026-13
- OSV PYSEC-2026-2359
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.