CVE-2026-124726: Relative Path Traversal, with Unintended Proxy vulnerability in Apache APISIX
This Apache advisory covers CVE-2026-124726 in Apache APISIX.
- CVE-2026-124726
Key facts
- Vendor rating
- Medium, CVSS 6.9
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N· base score 6.9, scored by apacheAttack vector: network. Attack complexity: low. Attack requirements: present. Privileges required: none. User interaction: none. Confidentiality impact on the vulnerable system: none. Integrity impact on the vulnerable system: none. Availability impact on the vulnerable system: none. Confidentiality impact on subsequent systems: high. Integrity impact on subsequent systems: low. Availability impact on subsequent systems: none.- Weakness
- CWE-23: Relative Path Traversal, with CWE-441: Unintended Proxy or Intermediary
- CISA SSVC
- Exploitation: none observed. Automatable: no. Technical impact: partial. CISA, .
- CISA KEV
- Not listed (catalogue checked )
- Affected
- 3.19.0 before 3.20.0
- Fixed in
- 3.20.0
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
Relative Path Traversal, with Unintended Proxy vulnerability in Apache APISIX.
A caller of the MCP endpoint can invoke endpoints the OpenAPI document never declared, under the declared tool's HTTP method, using the credentials the
Route adds. This issue affects Apache APISIX: from 3.19.0 before 3.20.0.
Users are recommended to upgrade to version 3.20.0, which fixes the issue.
Text from the source record.
- 3.19.0 before 3.20.0
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2026-124726
Upgrade to the first fixed release for your version, shown in the table above.
Vendor guidance
- Users are recommended to upgrade to version 3.20.0, which fixes the issue.
More Apache Software Foundation advisories
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Apache Software Foundation advisories, November 2026All Apache Software Foundation advisories
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