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TI-2026-76793 Aliases CVE-2026-112783GHSA-2rp2-4gqx-g5jr

OpenCATS AJAX endpoints let read users edit and delete activity

Priority LOW 24CWE-862Published · 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
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

OpenCATS before 0.10.0 contains a missing authorization flaw (CWE-862) in the ajax/deleteActivity.php and ajax/editActivity.php endpoints. A user with READ-level access can edit or delete activity entries by supplying an arbitrary activityID. An authenticated attacker can thereby modify or delete activity and pipeline history for candidates, contacts and companies. The CVSS 4.0 vector is network-reachable, requires low privileges and no user interaction, and impacts integrity only.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

OpenCATS before 0.10.0 contains a missing authorization vulnerability in ajax/deleteActivity.php and ajax/editActivity.php that allows READ-level users to edit and delete activity entries. Authenticated attackers can supply an arbitrary activityID via GET or POST to modify or delete activity and pipeline history for candidates, contacts and companies.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00255 17th percentileScored 2026-11-07
Fix Fixed OpenCATS (opencats): 0.10.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
opencatsOpenCATSbefore 0.10.00.10.0Patch availableCNA
  • OpenCATS Vendoropencats Affected before 0.10.0 Fixed in 0.10.0 Patch available CNA

Remediation

Update OpenCATS to version 0.10.0 or later, which fixes this issue. The sources list no fixed version beyond 0.10.0. CISA has not listed this vulnerability in its Known Exploited Vulnerabilities catalog.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA OpenCATS (opencats) Fixed in 0.10.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    OpenCATS 0.10.0

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2026-76798 Missing authorization in OpenCATS calendar edit and deletePriority LOW 24
    • TI-2026-76797 Missing authorization in OpenCATS EEO reports exposes demographic dataPriority LOW 24
    • TI-2026-76796 Missing authorization in OpenCATS import revert action lets users delete recordsPriority LOW 24
    Show all 6 records →

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-112783
  2. 2026-10-20 Alias added: GHSA-2rp2-4gqx-g5jr
  3. 2026-10-23 CISA SSVC decision points changed

References

Patch 1

Other 4

  • TI-2021-22549 OpenCATS 0.9.4 Remote Code Execution via Resume Upload CVSS 4.0CRITICAL 9.3
  • TI-2026-22120 OpenCATS PHP Code Injection via installer AJAX endpoint CVSS 4.0CRITICAL 9.2
  • TI-2026-36639 OpenCATS - SQL Injection in DataGrid sortDirection Parameter CVSS 4.0HIGH 8.4
  • TI-2023-12031 Cross-site scripting in OpenCATS CVSS 3.1MEDIUM 6.1
  • TI-2023-12032 Cross-site scripting in OpenCATS CVSS 3.1MEDIUM 5.4
  • TI-2023-12030 Open redirect in OpenCATS CVSS 3.1MEDIUM 5.4
See all 37 →

Sources

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