Vulnerability · Published Sep 29, 2026 · Assigned by Fluid Attacks
CVE-2026-97685LimeSurvey Community Edition 7.3.0 - Cross-survey object authorization bypass in REST survey patch operations
High 7.1
In plain English
A high-severity authorization bypass via user-controlled key in LimeSurvey from LimeSurvey. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Official description
An authenticated LimeSurvey Community Edition 7.3.0 user allowed to create surveys can use their own survey as an authorized context while supplying question or answer identifiers belonging to another user's survey. The REST survey-patching endpoint checks the attacker's permission against the survey ID in the request URL, but the vulnerable persistence operations resolve the target object independently by its global qid or aid and never verify that it belongs to that authorized survey.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| LimeSurvey | LimeSurvey | 7.3.0 |
Weakness: CWE-639 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N