Apache Airflow up to 3.1.x JWT Token log file

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Apache Airflow up to 3.1.x. Impacted is an unknown function of the component JWT Token Handler. The manipulation leads to log file. This vulnerability is listed as CVE-2026-31987. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Apache Airflow up to 3.1.x. This issue affects some unknown processing of the component JWT Token Handler. The manipulation with an unknown input leads to a log file vulnerability. Using CWE to declare the problem leads to CWE-532. Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information. Impacted is confidentiality. The summary by CVE is:

JWT Tokens used by tasks were exposed in logs. This could allow UI users to act as Dag Authors. Users are advised to upgrade to Airflow version that contains fix. Users are recommended to upgrade to version 3.2.0, which fixes this issue.

The weakness was presented by unixengineer and Jason Imison as 62428. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-31987 since 03/10/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/17/2026). The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 3.2.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1158). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Apache Airflow

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Log file
CWE: CWE-532 / CWE-200 / CWE-284
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Airflow 3.2.0
Patch: github.com

Timelineinfo

03/10/2026 CVE reserved
04/16/2026 +36 days Advisory disclosed
04/16/2026 +0 days VulDB entry created
04/17/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: apache.org
Product: github.com

Advisory: 62428
Researcher: unixengineer, Jason Imison
Status: Confirmed

CVE: CVE-2026-31987 (🔒)
GCVE (CVE): GCVE-0-2026-31987
GCVE (VulDB): GCVE-100-357923
CERT Bund: WID-SEC-2026-1158 - Apache Airflow: Schwachstelle ermöglicht Offenlegung von Informationen

Entryinfo

Created: 04/16/2026 16:44
Updated: 04/17/2026 11:17
Changes: 04/16/2026 16:44 (59), 04/17/2026 11:17 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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