PUBLISHED
2026-08-12 16:17
MODIFIED
2026-08-12 16:17
EPSS (Prob. Exploit)
0.53%
Top 55.2%
> DESCRIPTION
Apache Airflow's XCom `GET /api/v2/{...}/xcomEntries/{key}?deserialize=true` endpoint passed a string-literal payload through `BaseXCom.deserialize_value` without the `_check_forbidden_xcom_keys` guard, allowing an authenticated API user with XCom write-and-read access to instantiate arbitrary `airflow.*` classes on the API server (CWE-502). An authenticated user who can write an XCom value and then read it back with `deserialize=true` triggers 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.
> AFFECTED_PRODUCTS
ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.
> CWE DETAILED DESCRIPTIONS
CWE-502: Deserialization of Untrusted Data - The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
> GITHUB SECURITY ADVISORY
GHSA-fcmm-42r9-mmmm
MODERATE
Apache Airflow XCom API permits unsafe deserialization through JSON string literals
AFFECTED PACKAGES:
PIP / apache-airflow
< 3.3.1
Fixed in: 3.3.1
> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)
Apache Airflow: Arbitrary airflow.* class instantiation on the API server via the XCom deserialize endpoint
AFFECTED PACKAGES:
Unknown / Unknown
8963 versions affected
ALIASES:
BIT-airflow-2026-59242, GHSA-fcmm-42r9-mmmm, PYSEC-2026-3992
> HISTORIQUE DES MODIFICATIONS
Première apparition
12/08/2026 16:17
Source: NVD
📊
ENRICHISSEMENT
01/09/2026 06:02
CWE
Champ modifié: Description CWE
Nouvelle valeur:
CWE-502: Deserialization of Untrusted Data - The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
Total des modifications: 1
Dernière mise à jour: 2 months ago