What’s Vulnerable › Vulnerabilities

CVE-2026-97685: LimeSurvey Community Edition 7.3.0 - Cross-survey object authorization bypass in REST survey patch operations

• Severity: high (CVSS 7.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-29 · updated 2026-09-30
• Weakness: CWE-639

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

• LimeSurvey: 7.3.0

References

• https://fluidattacks.com/es/advisories/zoo
• https://github.com/LimeSurvey/LimeSurvey/
• https://github.com/LimeSurvey/LimeSurvey/commit/a39a01537a8f79581bd630bcac94f71ae6ce2cce
• https://fluidattacks.com/es/advisories/zoo

Get alerted when CVE-2026-97685 or the next vulnerability affects your stack