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 acces

highCVSS 7.5CVE-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.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: high — CVSS 7.5
Published: 2026-07-15
Last updated: 2026-07-15
Exploitation: Not in CISA KEV at last sync

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

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-599540.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-59954	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

highGHSA-4w3q-qpfq-v992: Apollo ConfigService access key authentication bypass via appId parsing and non-canonical…ghsa

Recent advisories for Apollo is a

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-59955: Apollo is a reliable configuration management system suitable for microservice configuration m…nvd · 2026-07-15
mediumCVE-2025-32781: Apollo is a reliable configuration management system suitable for microservice configuration m…nvd · 2026-07-15
highGHSA-h4pc-58cc-hc95: Apollo ConfigService access key authentication bypass via raw config file appId parsingghsa · 2026-07-13
highGHSA-4w3q-qpfq-v992: Apollo ConfigService access key authentication bypass via appId parsing and non-canonical…ghsa · 2026-07-13
mediumGHSA-jxpj-9j24-w337: Apollo Portal: There is a risk of unauthorized access to the Apollo configuration centerghsa · 2026-07-13