CWE-345: Insufficient Verification of Data Authenticity
Sources read 2026-10-30. MITRE's own page · All weakness notes · Added to CISA's list in the last seven days
What it is
From MITRE's CWE catalogue
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
MITRE classes it as a class-level weakness.
What it lets an attacker do
From MITRE's CWE catalogue
- Varies by Context, Unexpected State (affects: integrity, other)
On CISA's exploited list
From CISA's exploited list
1 of the 110 entries CISA added from 2026-08-02 to 2026-10-30 name CWE-345, against 0 of 69 in the 90 days before. Over the whole catalogue 1 entries name it. The counts are small, so read them as a rough order, not a rate.
CISA's list is not every flaw that is exploited: it holds the ones CISA has evidence of, listed on the day it added them.
- CVE-2026-111357, Ivanti Connect Secure, added 2026-10-30
How MITRE says to find it
From MITRE's CWE catalogue
- Automated Static Analysis
Attack patterns MITRE links to it
From MITRE's CWE catalogue
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