What’s Vulnerable › Vulnerabilities

CVE-2026-78242: Apache APISIX: data-mask may fail to redact request headers in logger output

• Severity: medium (CVSS 5.7 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-01 · updated 2026-10-01
• Weakness: CWE-532

Description

Insertion of sensitive information into log file vulnerability in Apache APISIX. This vulnerability can cause the unmasked header value to be written to the log sink under a certain response structure.  This issue affects Apache APISIX: 3.17.0. Users are recommended to upgrade to version 3.18.0, which fixes the issue.

Affected products

• Apache Software Foundation Apache APISIX: 3.17.0

References

• https://lists.apache.org/thread.html/qxzsyw1pbgxg4sqkc4t2g8h4w2q0mvsn
• http://www.openwall.com/lists/oss-security/2026/10/01/2

Get alerted when CVE-2026-78242 or the next vulnerability affects your stack