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Gophish API lets users take over other users' objects

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
Low · High · None
Fix status
No fix listed

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

Summary

Gophish through 0.12.1 has an insecure direct object reference flaw (CWE-639) in its API create endpoints. An authenticated user with low privileges can supply another user's sequential id when creating groups, templates, landing pages or sending profiles, overwriting and reassigning those objects. Owners lose access and victims' recipient lists are exposed. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Gophish through 0.12.1 contains an insecure direct object reference vulnerability that allows authenticated users to take over other users' groups, templates, landing pages and sending profiles. Attackers can supply another user's sequential id in POST requests to /api/groups/, /api/templates/, /api/pages/ or /api/smtp/ to overwrite and reassign objects, locking out owners and exposing victims' recipient lists.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00199 9th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
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
gophishgophishup to 0.12.1—No fix listedCNA
  • gophish Vendorgophish Affected up to 0.12.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for gophish.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-07 Threatist record created from CVE-2026-107270
  2. 2026-10-07 CISA SSVC decision points changed
  3. 2026-10-07 Alias added: GHSA-5h35-6pm3-mw32

References

  • TI-2026-56734 Gophish Account Lockout and Forced Password Change Bypassable via API Key CVSS 4.0HIGH 8.6
  • TI-2026-69198 Gophish Login Rate Limit Bypass via X-Forwarded-For Spoofing CVSS 4.0MEDIUM 6.9
  • TI-2026-28778 Gophish 0.12.1 Denial of Service via Office Document Upload CVSS 4.0HIGH 7.1
  • TI-2026-69190 Username enumeration via login timing discrepancy in Gophish CVSS 4.0MEDIUM 6.3
  • TI-2026-69200 Gophish SSRF via POST /api/import/site CVSS 4.0MEDIUM 5.3
  • TI-2026-69199 Cross-site scripting in Gophish via SMTP server error messages CVSS 4.0LOW 2.3

Sources