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PublicCMS IDOR lets members edit other members' addresses

Priority MEDIUM 57CWE-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
None · Low · None
Fix status
No fix listed

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

Summary

PublicCMS through V6.202608.a contains an insecure direct object reference in the TradeAddressController tradeAddress/save handler (CWE-639). An authenticated member can submit another member's sequential numeric address id to overwrite that member's addressee, telephone and address fields, because ownership by the session user and site is never verified. CISA SSVC rates exploitation as PoC and technical impact as partial, and the CVSS 4.0 vector requires low privileges and no user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Description from the CNA

PublicCMS through V6.202608.a contains an insecure direct object reference vulnerability in the TradeAddressController tradeAddress/save handler that allows authenticated members to modify other members' shipping addresses. Attackers can submit another member's sequential numeric address id to overwrite its addressee, telephone and address fields, since ownership by the session user and site is never verified.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00299 22nd 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
SanluanPublicCMSup to V6.202608.a—No fix listedCNA
  • PublicCMS VendorSanluan Affected up to V6.202608.a 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:publiccms:publiccms:*:*:*:*:*:*:*:*——Sanluan
  • cpe:2.3:a:publiccms:publiccms:*:*:*:*:*:*:*:* Versions — — ·Sanluan

Remediation

The sources list no fixed version for PublicCMS.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-110113
  2. 2026-10-13 Alias added: GHSA-vpf9-h2mx-wqjf
  3. 2026-10-18 CISA SSVC decision points changed
  4. 2026-10-18 Priority changed: LOW → MEDIUM

References

  • TI-2025-18979 An arbitrary file upload vulnerability in the component… CVSS 3.1CRITICAL 9.8
  • TI-2023-17417 PublicCMS <=V4.0.202302 is vulnerable to Insecure Permissions. CVSS 3.1CRITICAL 9.8
  • TI-2020-13943 SQL Injection vulnerability found in PublicCMS v.4.0 allows a remote attacker to execute… CVSS 3.1CRITICAL 9.8
  • TI-2020-13942 SQL Injection vulnerability found in San Luan PublicCMS v.4.0 allows a remote attacker to… CVSS 3.1CRITICAL 9.8
  • TI-2025-40474 PublicCMS V5.202506.b is vulnerable to SSRF. CVSS 3.1CRITICAL 9.1
  • TI-2025-35555 OS Command injection vulnerability in PublicCMS PublicCMS-V5.202506.a, and… CVSS 3.1HIGH 8.2
See all 57 →

Sources