Description
BookWyrm through 0.9.1 fails to validate user visibility permissions in the status edit endpoint, allowing authenticated attackers to read followers-only and direct-message reviews by enumerating sequential status IDs. Attackers can access the raw content of restricted statuses through the edit view, bypassing the privacy protections documented for these message types.
References6
- github.com/bookwyrm-social/bookwyrm
- github.com/bookwyrm-social/bookwyrm/blob/v0.9.1/bookwyrm/templa…
- github.com/bookwyrm-social/bookwyrm/blob/v0.9.1/bookwyrm/views/…
- github.com/geo-chen/oss/blob/main/bookwyrm.md#finding-1-authent…
- www.vulncheck.com/advisories/bookwyrm-through-0.9.1-insecure-di…
- github.com/geo-chen/oss/blob/main/bookwyrm.md#finding-1-authent…
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 4.0
-
7.1
HIGH
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 38 · as of 7 November 2026
- CWE
- CWE-639
Could this be exploited in your environment?
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