Medium

API Platform Core can leak exceptions message that may contain sensitive information

Disclosed: 03.04.2025
Updated: 11.10.2026 10:22

Summary

Exception messages, that are not HTTP exceptions, are visible in the JSON error response.

Details

While we wanted to make our errors compatible with the JSON Problem specification, we ended up handling more exceptions then we did previously (introduced at https://github.com/api-platform/core/pull/5823). Instead of leaving that to Symfony, we ended up serializing errors with our normalizers which lead to not hiding the exception details. Note that the trace is hidden in production but the message is not, and the message can contain sensitive information.

PoC

At https://github.com/ili101/api-platform/tree/test3.2 it triggers an authentication exception as LDAP is not reachable. You can find the message available as a JSON response when trying to reach an endpoint.

Impact

Version 3.2 until 3.2.4 is impacted.

Affected software

Click a technology to see all vulnerabilities affecting it.

Platform	Package	Vulnerable versions	Fixed in
Composer package	api-platform/core	>= 3.2.0, < 3.2.5	3.2.5

References

CVSS score 5.3/10

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-209
Platform: Composer
Package: api-platform/core
Disclosed: 03.04.2025
Updated: 11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-rfw5-cqjj-7v9r - CC BY 4.0

Vulnerability history: api-platform/core

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries: 8
First → latest: 10.2019 08.2026
Without a fix: 0
Exploited in attacks: 0

Severity breakdown

High 3
Medium 5

Disclosures per year

2019: 1
2020: 0
2021: 0
2022: 0
2023: 1
2024: 0
2025: 4
2026: 2

07.08.2026

API Platform Core: Relation IRIs are not type-checked: a related resource can be denormalised as the wrong resource type (type confusion)

Medium · 6.5 CVE-2026-54164 < 4.1.30, >= 4.2.0, < 4.2.26, >= 4.3.0, < 4.3.12 4.1.30, 4.2.26, 4.3.12
10.07.2026

API Platform Core vulnerable to cross-user attribute leak in JSON:API and HAL item normalizers due to missing isCacheKeySafe gate

Medium · 5.9 CVE-2026-49858 >= 2.6.0, < 4.1.29, >= 4.2.0, < 4.2.25, >= 4.3.0, < 4.3.8 4.1.29, 4.2.25, 4.3.8
04.04.2025

GraphQL grant on a property might be cached with different objects

High · 7.5 CVE-2025-31485 >= 4.0.0-alpha.1, < 4.0.22, < 3.4.17, >= 4.1.0-alpha.1, < 4.1.5 4.0.22, 3.4.17, 4.1.5
04.04.2025

GraphQL query operations security can be bypassed

High · 7.5 CVE-2025-31481 >= 4.0.0-alpha.1, < 4.0.22, < 3.4.17, >= 4.1.0-alpha.1, < 4.1.5 4.0.22, 3.4.17, 4.1.5
03.04.2025

API Platform Core can leak exceptions message that may contain sensitive information this entry

Medium · 5.3 CVE-2023-47639 >= 3.2.0, < 3.2.5 3.2.5
24.03.2025

API Platform Core does not call GraphQl securityAfterResolver

Medium · 4.4 CVE-2025-23204 >= 3.3.8, < 3.3.15 3.3.15
28.02.2023

api-platform/core's secured properties may be accessible within collections

High · 7.7 CVE-2023-25575 >= 3.0.0, < 3.0.12, >= 3.1.0, < 3.1.3, >= 2.6.0, < 2.7.10 3.0.12, 3.1.3, 2.7.10
14.10.2019

Incorrect Access Control vulnerability in api-platform/core

Medium · 6.5 CVE-2019-1000011 >= 2.2.0, < 2.2.10, >= 2.3.0, < 2.3.6 2.2.10, 2.3.6

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