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TI-2026-58910 Aliases CVE-2026-86111GHSA-phg3-p22v-rp9q

BookWyrm through 0.9.1 Insecure Direct Object Reference in EditStatus Exposes Followers-Only and Direct Statuses

Priority MEDIUM 64CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00436 38th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
bookwyrm-socialbookwyrmup to 0.9.1—No fix listedCNA
  • bookwyrm Vendorbookwyrm-social Affected up to 0.9.1 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:joinbookwyrm:bookwyrm:*:*:*:*:*:*:*:*——bookwyrm-social
  • cpe:2.3:a:joinbookwyrm:bookwyrm:*:*:*:*:*:*:*:* Versions — — ·bookwyrm-social

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-86111
  2. 2026-10-03 Alias added: GHSA-phg3-p22v-rp9q

References

Other 4

  • TI-2022-16352 Missing rate limit in Authentication in bookwyrm CVSS 3.1CRITICAL 9.8
  • TI-2026-58912 Authorization bypass in bookwyrm-social bookwyrm CVSS 4.0HIGH 7.1
  • TI-2022-16380 URL Redirection to Untrusted Site ('Open Redirect') in bookwyrm CVSS 3.1HIGH 7.1
  • TI-2022-02451 Authentication Bypass by Primary Weakness in bookwyrm-social/bookwyrm CVSS 3.1CRITICAL 9.8
  • TI-2022-07696 Server-side request forgery in BookWyrm CVSS 3.1HIGH 8.8
  • TI-2022-13180 Cross-site Scripting in BookWyrm CVSS 3.1MEDIUM 6.3
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences