Medium severity · published Oct 1, 2026
CVE-2026-78242
Apache APISIX: data-mask may fail to redact request headers in logger output
5.7
CVSS
0.1%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
Apache APISIX · Apache Software Foundation
3.17.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-78242
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-78242
vendor-advisory
https://lists.apache.org/thread.html/qxzsyw1pbgxg4sqkc4t2g8h4w2q0mvsn
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