Dolibarr ERP CRM Online Signature security.lib.php dol_verifyHash signature verification

published 2026-05-03 6 mo ago modified 2026-10-26 13 d ago also GHSA-jggh-5rmh-r6h5 , EUVD-2026-26827

cvss: 3.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits: 0; none known

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.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 6 mo ago (2026-05-04)

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

gist.github.com https://gist.github.com/Shaon-Xis/d6ae069fc54f006457b68a91d5a8e158 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	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
CNA	3.1	3.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
CNA	3.0	3.7	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
CNA	2.0	2.6	AV:N/AC:H/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR
CNA	4.0	2.9	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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	3.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CNA	2.0	2.6	AV:N/AC:H/Au:N/C:N/I:P/A:N
GitHub	3.1	3.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	dolibarr/dolibarr	<=15.0.3	no fix listed

Affected products

Dolibarr ERP CRM

Classification

Weakness

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

References

gist.github.com /Shaon-Xis/d6ae069fc54f006457b68a91d5a8e158
exploit, web
vuldb.com /vuln/360859
vdb-entry, technical-description, web
vuldb.com /vuln/360859/cti
signature, permissions-required, web
vuldb.com /submit/801794
third-party-advisory, web
nvd.nist.gov /vuln/detail/CVE-2026-7689
advisory
github.com /Dolibarr/dolibarr
package

Sources

CVE List CVE-2026-7689
GitHub Advisory GHSA-jggh-5rmh-r6h5
NVD CVE-2026-7689

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary