Com.ctrip.framework.apollo:apollo: CWE-20: Improper Input Validation in apolloconfig apollo (CVE-2026-59954)
Apollo 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.
AI Analysis
Technical Summary
Apollo ConfigService extracts appId values from requests to authenticate using AccessKey secrets. If the appId variant in the request differs in a non-canonical way (such as accent or trailing space differences) but is treated as equivalent by the database collation, the service may fail to find the matching AccessKey and skip signature verification. This results in unauthorized access to configuration data via /configs and /configfiles endpoints. The vulnerability affects versions up to 2.0.1 and is resolved in version 2.5.2.
Potential Impact
An unauthenticated remote attacker can bypass AccessKey authentication and read sensitive configuration data from Apollo ConfigService endpoints when the deployment database collation treats non-canonical appId variants as equivalent to the real appId. This compromises confidentiality but does not impact integrity or availability.
Mitigation Recommendations
A fix is available in Apollo version 2.5.2. Users should upgrade to version 2.5.2 or later to remediate this vulnerability. No other mitigations are specified.
Com.ctrip.framework.apollo:apollo: CWE-20: Improper Input Validation in apolloconfig apollo (CVE-2026-59954)
Description
Apollo 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.
CVSS v3.1
Score 7.5high
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Apollo ConfigService extracts appId values from requests to authenticate using AccessKey secrets. If the appId variant in the request differs in a non-canonical way (such as accent or trailing space differences) but is treated as equivalent by the database collation, the service may fail to find the matching AccessKey and skip signature verification. This results in unauthorized access to configuration data via /configs and /configfiles endpoints. The vulnerability affects versions up to 2.0.1 and is resolved in version 2.5.2.
Potential Impact
An unauthenticated remote attacker can bypass AccessKey authentication and read sensitive configuration data from Apollo ConfigService endpoints when the deployment database collation treats non-canonical appId variants as equivalent to the real appId. This compromises confidentiality but does not impact integrity or availability.
Mitigation Recommendations
A fix is available in Apollo version 2.5.2. Users should upgrade to version 2.5.2 or later to remediate this vulnerability. No other mitigations are specified.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-4w3q-qpfq-v992
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-59954"]
- Ecosystems
- ["Maven"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a55ffb268715ace432fa73e
Added to database: 07/14/2026, 09:21:54 UTC
Last enriched: 07/14/2026, 09:57:26 UTC
Last updated: 07/19/2026, 06:46:21 UTC
Views: 19
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