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CVE-2026-78242

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

MEDIUM
5.7
CVSS Score
Published: October 1, 2026 at 10:58 AM UTC
Updated: October 1, 2026 at 03:17 PM UTC
1 product affected across 1 vendorApisix

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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory
Source: cverecord
https://lists.apache.org/thread.html/qxzsyw1pbgxg4sqkc4t2g8h4w2q0mvsn
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2026/10/01/2

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.7MEDIUMapache
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-532

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