Rallly Has an IDOR Vulnerability in Vote Update Endpoint Allows Unauthorized Manipulation of Participant Votes
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-285.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA rallly (lukevella) Fixed in 4.5.4
Timeline
- 2026-10-02 Threatist record created from CVE-2025-65028
References
More lukevella Rallly vulnerabilities
- TI-2025-30246 Rallly Insufficient Password Login Token Entropy Leads to Account Takeover CVSS 3.1CRITICAL 9.8
- TI-2025-40207 Rallly Has Unauthorized Poll Finalization via Insecure Direct Object Reference (IDOR) CVSS 3.1CRITICAL 9.1
- TI-2025-40220 Rallly Improper Authorization Allows Reopening of Any Finalized Poll via Public pollId CVSS 3.1HIGH 8.1
- TI-2025-40219 Rallly Broken Authorization: Any User Can Pause or Resume Any Poll via Poll ID Manipulation CVSS 3.1HIGH 8.1
- TI-2025-40215 Rallly Has an IDOR Vulnerability in Participant Deletion Endpoint Allows Unauthorized Removal of Poll Participants CVSS 3.1HIGH 8.1
- TI-2025-40553 Rallly Information Disclosure Vulnerability in Participant API Leaks Names and Emails Despite Pro Privacy Settings CVSS 4.0HIGH 7.1
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences