Apollo ConfigService access key authentication bypass via appId parsing and non-canonical matching

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Summary

CVECVE-2026-59954
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-15 17:16:50 UTC
Updated2026-07-15 18:16:49 UTC
DescriptionApollo is a reliable configuration management system suitable for microservice configuration management scenarios. Prior to 2.5.2, Apollo ConfigService may allow unauthorized access to configuration data when AccessKey or management key authentication is enabled because ConfigService can accept a non-canonical appId variant during authentication while downstream request handling resolves it to the protected app, including accent variants under accent-insensitive collations or trailing-space variants under PAD SPACE collations on /configs and /configfiles endpoints. This issue is fixed in version 2.5.2.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.005490000 probability, percentile 0.422810000 (date 2026-07-17)

Problem Types: CWE-20 | CWE-287 | CWE-20 CWE-20: Improper Input Validation | CWE-287 CWE-287: Improper Authentication

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apolloconfig Apollo affected < 2.5.2 Not specified

References

ReferenceSourceLinkTags
github.com/apolloconfig/apollo/security/advisories/GHSA-4w3q-qpfq-v992 [email protected] github.com
github.com/apolloconfig/apollo/releases/tag/v2.5.2 [email protected] github.com
github.com/apolloconfig/apollo/commit/310809d557e01c6803051736cd525e333f... [email protected] github.com
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