SB20260825105 - Multiple vulnerabilities in Apache APISIX

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Main Vulnerability Database SB20260825105

SB20260825105 - Multiple vulnerabilities in Apache APISIX

Published: August 25, 2026

Security Bulletin ID SB20260825105
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Cleartext transmission of sensitive information (CVE-ID: CVE-2026-31923)

CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to cleartext transmission of sensitive information in the openid-connect plugin configuration when handling OpenID Connect connections with certificate verification disabled by default. A remote attacker can intercept network traffic to disclose sensitive information.


2) Cleartext transmission of sensitive information (CVE-ID: CVE-2026-31924)

CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to cleartext transmission of sensitive information in the tencent-cloud-cls log export plugin when exporting logs over plaintext HTTP. A remote attacker can intercept network traffic to disclose sensitive information.


3) Improper Neutralization of Special Elements in Output Used by a Downstream Component (CVE-ID: CVE-2026-31908)

CWE-ID: CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to inject malicious headers.

The vulnerability exists due to improper neutralization of input in the forward-auth plugin when processing certain configurations. A remote attacker can supply crafted header values to inject malicious headers.

Exploitation depends on certain forward-auth plugin configurations.


Remediation

Install update from vendor's website.

References