CVE-2025-65796Public exploitNetwork attack vector

Authenticated reaction deletion via missing ownership check

Published Dec 8, 2025 · Updated Jul 5, 2026

Missing authorization in the reaction API of usememos memos before 0.25.3 allows remote authenticated users to delete others' reactions. DeleteMemoReaction accepts a caller-supplied reaction ID and passes it to Store.DeleteReaction without authenticating the caller or comparing the reaction's CreatorID with the current user. Any low-privileged account can delete reactions belonging to other users, but the flaw does not expose memo contents or permit broader data modification.

CVSS severity4.3
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Missing authorization in the reaction API of usememos memos before 0.25.3 allows remote authenticated users to delete others' reactions. DeleteMemoReaction accepts a caller-supplied reaction ID and passes it to Store.DeleteReaction without authenticating the caller or comparing the reaction's CreatorID with the current user. Any low-privileged account can delete reactions belonging to other users, but the flaw does not expose memo contents or permit broader data modification.

The record

CVE
CVE-2025-65796
Published
Dec 8, 2025
Updated
Jul 5, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-862, CWE-284, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
CWE-284Improper Access Control
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo