Unlimited voting via spoofed forwarding headers
Published Aug 1, 2026 · Updated Aug 1, 2026
Authentication bypass in YOP Poll 7.0.0 through 7.0.5 allows remote attackers to cast unlimited votes on public polls. The /wp-json/yop-poll/v1/votes endpoint accepts HTTP_CLIENT_IP or X-Forwarded-For as the voter address without validating the peer connection. Exploitation requires a public poll configured to block voters by IP and permits manipulation of its vote totals without authentication.
Summary
What happened
Authentication bypass in YOP Poll 7.0.0 through 7.0.5 allows remote attackers to cast unlimited votes on public polls. The /wp-json/yop-poll/v1/votes endpoint accepts HTTP_CLIENT_IP or X-Forwarded-For as the voter address without validating the peer connection. Exploitation requires a public poll configured to block voters by IP and permits manipulation of its vote totals without authentication.
The record
- CVE
- CVE-2026-14840
- Published
- Aug 1, 2026
- Updated
- Aug 1, 2026
- Vendor
- YOP
- Product
- YOP Poll
- Classifications
- CWE-290, T1565.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 1, 2026CVE publishedPublication date reported by the CVE source.
- Aug 1, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=7.0.0 <7.0.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- WPScan vote-limit bypass proof of conceptproof of concept · validated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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