Vulnerability · Published Oct 15, 2026 · Assigned by VulnCheck

CVE-2026-111278NivoCart through 2.5.1 CAPTCHA Bypass via Answer Disclosed in Page HTML

Medium 5.3

In plain English

A medium-severity security flaw in nivocart from nivocart. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.3%top 74.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

NivoCart through 2.5.1 contains a CAPTCHA bypass vulnerability that allows unauthenticated attackers to defeat form protection because the expected code is printed as plain text in the HTML. Attackers can fetch protected forms, extract the captcha_image value with a pattern match, and submit it to automate spam, registrations, reviews, and account deletion requests.

Affected products (as reported)

Vendor	Product	Versions
nivocart	nivocart	0 – through 2.5.1

Weakness: CWE-804 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

GitHub Issue #27 issue-tracking
https://github.com/nivocart/nivocart/blob/5bc2c3fc7caed9846b58959183f8ccf599cd4399/upload/catalog/controller/information/contact.php#L144-L150 technical-description
https://github.com/nivocart/nivocart/blob/5bc2c3fc7caed9846b58959183f8ccf599cd4399/upload/catalog/view/theme/default/template/information/contact.tpl#L43 technical-description
https://github.com/nivocart/nivocart product
VulnCheck Advisory: NivoCart through 2.5.1 CAPTCHA Bypass via Answer Disclosed in Page HTML third-party-advisory