CVE-2026-7689Public exploitNetwork attack vector

Signature forgery via loose hash comparison

Published May 3, 2026 · Updated May 3, 2026

Improper signature verification in Dolibarr ERP & CRM 23.0.0 through 23.0.2 allows remote attackers to forge online signatures. The Online Signature Module's dol_verifyHash function compares a computed hash with an untrusted value using PHP loose equality, permitting type-juggling matches instead of an exact cryptographic comparison. No privileges or user interaction are required, but successful exploitation is highly complex and the reported impact is limited to integrity.

CVSS severity3.7
Low
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper signature verification in Dolibarr ERP & CRM 23.0.0 through 23.0.2 allows remote attackers to forge online signatures. The Online Signature Module's dol_verifyHash function compares a computed hash with an untrusted value using PHP loose equality, permitting type-juggling matches instead of an exact cryptographic comparison. No privileges or user interaction are required, but successful exploitation is highly complex and the reported impact is limited to integrity.

The record

CVE
CVE-2026-7689
Published
May 3, 2026
Updated
May 3, 2026
Vendor
Dolibarr Foundation
Product
Dolibarr ERP & CRM
Classifications
CWE-347, CWE-345, T1565
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2026CVE publishedPublication date reported by the CVE source.
  2. May 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=23.0.0
  2. Affected versionversion=23.0.1
  3. Affected versionversion=23.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dolibarr Foundation · Dolibarr ERP & CRMversion=23.0.0; version=23.0.1; version=23.0.2

Published CVSS scores

2.6VulDBAV:N/AC:H/Au:N/C:N/I:P/A:N
3.7VulDBCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
2.9VulDBCVSS: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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
CWE-345Insufficient Verification of Data Authenticity
T1565Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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