CVE-2018-15833

Severity: medium (CVSS 4.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-08-26 · updated 2026-06-17
Weakness: CWE-639

Description

In Vanilla before 2.6.1, the polling functionality allows Insecure Direct Object Reference (IDOR) via the Poll ID, leading to the ability of a single user to select multiple Poll Options (e.g., vote for multiple items).

Affected products

vanilla forums: before 2.6.1 — fixed in 2.6.1

How to fix

Upgrade to a fixed version: vanilla forums 2.6.1. Check the vendor advisory for mitigations.

References

https://hackerone.com/reports/326434
https://open.vanillaforums.com/discussion/36559
https://twitter.com/viperbluff/status/1033067882941304832
https://twitter.com/viperbluff/status/1033640333890834433
https://hackerone.com/reports/326434
https://open.vanillaforums.com/discussion/36559
https://twitter.com/viperbluff/status/1033067882941304832
https://twitter.com/viperbluff/status/1033640333890834433

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