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DMs get leaked and can be seen on Webfinger Browser

High
dahlia published GHSA-6r2w-3pcj-v4v5 Feb 9, 2026

Package

No package listed

Affected versions

< 0.7.2

Patched versions

0.6.20, 0.7.2

Description

Summary

It is possible to read DMs and follower-only posts sent by a hollo user without authorization.

Details

PoC

Impact

This leaks DMs.

Example:
As seen on phanpy:
grafik
As seen on webfinger browser:
grafik

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVE ID

CVE-2026-25808

Weaknesses

No CWEs

Credits