Description
Memos' webhook URL validation, isReservedIP (internal/webhook/validate.go), checks a candidate IP against a reservedCIDRs list that omits 0.0.0.0/8 and never calls ip.IsUnspecified — unlike the correctly implemented sibling function isInternalIP in internal/httpgetter/html_meta.go, which does.
References (2)
Core 2
Core References
third-party-advisory
https://github.com/usememos/memos
third-party-advisory
https://github.com/usememos/memos/blob/main/internal/webhook/validate.go
Scores
CVSS v3
8.5
EPSS
0.0024
EPSS Percentile
15.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-918
Status
published
Products (1)
usememos/memos
< 0.29.1
Published
Aug 05, 2026
Tracked Since
Aug 05, 2026