TI-2026-42758 Aliases CVE-2026-59954 GHSA-4w3q-qpfq-v992

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

MEDIUM 40CWE-20Published 2026-07-15 · Updated 2026-07-15

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-287.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00574 47th percentileScored 2026-11-07

Fix Fixed apollo (apolloconfig): 2.5.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
apolloconfig	apollo	before 2.5.2	2.5.2	Patch available	CNA
—	com.ctrip.framework.apollo:apollo (Maven)	up to 2.0.1	—	No fix listed	GHSA-4w3q-qpfq-v992

apollo Vendorapolloconfig Affected before 2.5.2 Fixed in 2.5.2 Patch available CNA
com.ctrip.framework.apollo:apollo (Maven) Vendor— Affected up to 2.0.1 Fixed in — No fix listed GHSA-4w3q-qpfq-v992

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:apolloconfig:apollo::::::::	—	—	apolloconfig

cpe:2.3:a:apolloconfig:apollo:*:*:*:*:*:*:*:* Versions — — ·apolloconfig

Remediation

Fix · CNA apollo (apolloconfig) Fixed in 2.5.2

Timeline

2026-10-02 Threatist record created from CVE-2026-59954
2026-10-03 Alias added: GHSA-4w3q-qpfq-v992

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-59954

Other 4

TI-2022-04551 Apollo Configuration Center users improper authorization CVSS 3.1MEDIUM 4.3
TI-2026-42759 Apollo ConfigService access key authentication bypass via raw config file appId parsing CVSS 3.1HIGH 7.5
TI-2023-10873 Apollo has potential access control security issue in eureka CVSS 3.1HIGH 7.5
TI-2024-28573 An issue in apollocongif apollo v.2.2.0 allows a remote attacker to obtain sensitive information via a crafted request. CVSS 3.1HIGH 7.5
TI-2025-23818 Apollo: Apollo Portal release endpoint allows cross-application configuration disclosure via releaseId CVSS 3.1MEDIUM 6.5
TI-2023-10872 apollo-portal has potential CSRF issue CVSS 3.1MEDIUM 5.7

See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences