GHSA-4w3q-qpfq-v992: Apollo ConfigService access key authentication bypass via appId parsing and non-canonical matching
Apollo ConfigService versions up to 2.0.1 contain an authentication bypass vulnerability related to appId parsing and matching. When AccessKey authentication is enabled, the service may accept non-canonical appId variants that bypass signature verification due to database collation equivalences. This allows unauthenticated remote attackers to read configuration data from affected endpoints. The issue is fixed in Apollo 2.5.2 and later.
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.
GHSA-4w3q-qpfq-v992: Apollo ConfigService access key authentication bypass via appId parsing and non-canonical matching
Description
Apollo ConfigService versions up to 2.0.1 contain an authentication bypass vulnerability related to appId parsing and matching. When AccessKey authentication is enabled, the service may accept non-canonical appId variants that bypass signature verification due to database collation equivalences. This allows unauthenticated remote attackers to read configuration data from affected endpoints. The issue is fixed in Apollo 2.5.2 and later.
CVSS v3.1
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: 07/14/2026, 09:57:26 UTC
Views: 2
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