Vulnerability · Published Jul 15, 2026 · Assigned by GitHub_M

CVE-2026-59954Apollo ConfigService access key authentication bypass via appId parsing and non-canonical matching

High 7.5

In plain English

A high-severity improper input validation in apollo from apolloconfig. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.6%top 52.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	com.ctrip.framework.apollo:apollo	no fix listed	GHSA-4w3q-qpfq-v992

Affected products (as reported)

Vendor	Product	Versions
apolloconfig	apollo	< 2.5.2

Weakness: CWE-20, CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/apolloconfig/apollo/security/advisories/GHSA-4w3q-qpfq-v992 x_refsource_CONFIRM
https://github.com/apolloconfig/apollo/commit/310809d557e01c6803051736cd525e333ffe00ec x_refsource_MISC
https://github.com/apolloconfig/apollo/releases/tag/v2.5.2 x_refsource_MISC