# CVE-2026-7689: Dolibarr ERP CRM Online Signature security.lib.php dol_verifyHash signature verification

> Remote attackers can bypass signature verification in Dolibarr ERP CRM's Online Signature module due to improper cryptographic checks.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 May 2026
- **Updated:** 4 May 2026
- **Also known as:** GHSA-jggh-5rmh-r6h5, UBUNTU-CVE-2026-7689

## What is CVE-2026-7689?

CVE-2026-7689 is a medium-severity vulnerability in Dolibarr ERP CRM, published on 3 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A security flaw has been discovered in Dolibarr ERP CRM up to 23.0.2. This vulnerability affects the function dol_verifyHash in the library htdocs/core/lib/security.lib.php of the component Online Signature Module. The manipulation results in improper verification of cryptographic signature. The attack may be performed from remote. Attacks of this nature are highly complex. It is stated that the exploitability is difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-347 (Improper Verification of Cryptographic Signature), CWE-345 (Insufficient Verification of Data Authenticity)

## Which versions are affected by CVE-2026-7689?

2 open source packages ship an affected version, including dolibarr/dolibarr.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `dolibarr/dolibarr` | Packagist | All versions to 15.0.3 | None |
| `dolibarr/dolibarr` | Packagist | All versions to 15.0.3 | None |

## How do I fix CVE-2026-7689?

No fix has been published for CVE-2026-7689 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7689 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7689 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7689 and fix it if it is affected.

What it is: CVE-2026-7689 is a medium-severity vulnerability in Dolibarr ERP CRM, published on 3 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7689 exists.

Affected packages and fixed versions:
- dolibarr/dolibarr (Packagist): affected all versions up to 15.0.3; no fix listed
- dolibarr/dolibarr (Packagist): affected all versions up to 15.0.3; no fix listed

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-7689/ (Markdown: https://insights.sbomify.com/CVE-2026-7689/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7689
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7689
- OSV: https://osv.dev/vulnerability/CVE-2026-7689

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-7689/
Summaries are generated and may contain mistakes; the official description above is the record.