November 14, 2026

CVE Watchtower

CVE-2026-125748Parabol Parabol Authorization Bypass Through User-Controlled Key

NVD

Vulnerability Summary

Parabol before 15.21.2 contains a missing authorization vulnerability in the addReactjiToReactable GraphQL mutation that allows authenticated users to tamper with reactions on other organizations' content. Attackers can pair their own meetingId with a reactableId of another tenant's reflection, comment, or sequential team prompt response to add or remove their reactions.
Severity Level
MEDIUM(5.3)
Published Date
Nov 10, 2026
Last Modified
Nov 10, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.26%Probability
Root Weakness (CWE)
CWE-639: Authorization Bypass Through User-Controlled Key ↗
The system does not prevent one user from accessing another user data or record by modifying the key value identifying the data.
CVSS v4.0 Base Metrics — Score 5.3 (MEDIUM)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredLow
User InteractionNone
Confidentiality (Vulnerable System)None
Integrity (Vulnerable System)Low
Availability (Vulnerable System)None
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
Show CVSS v3.x metrics (score 4.3)
CVSS v3.1 Base Metrics — Score 4.3 (MEDIUM)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

Affected & Patched Versions

Affected Versions
  • Parabol Parabol < 15.21.2
Patched Versions
  • Parabol Parabol 15.21.2

What to do

Fix it during your normal patch cycle. No exploitation is confirmed yet.

  1. Check whether you run Parabol Parabol and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Nov 10, 2026Published
  • Nov 10, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 14, 2026 02:13 UTC