CVE-2026-78242

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

Published Oct 1, 2026 CVSS 4.0 · 5.7 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apache
Apache apisix
Vendors & Products Apache
Apache apisix
Type Values Removed Values Added
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.
Title Apache APISIX: data-mask may fail to redact request headers in logger output
Weaknesses CWE-532
References
Metrics cvssV4_0

{'score': 5.7, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Oct 1, 2026, 2:57 PM
Reserved
Aug 24, 2026, 4:59 AM
Status
Deferred
Published
Oct 1, 2026, 11:17 AM
Modified
Oct 1, 2026, 3:17 PM