WeGIA: Use of Weak Password Hashing Algorithm (SHA-256, no salt) in html/login.php

published 2026-05-27 5 mo ago modified 2026-10-26 14 d ago also EUVD-2026-32565

cvss: 5.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits: 0; none known

WeGIA is a web manager for charitable institutions. In versions prior to 3.7.3, when a user logs in, html/login.php hashes the submitted password using PHP's hash() function with the SHA-256 algorithm and no salt before comparing it to the stored value. The password change flow in controle/FuncionarioControle.php follows the same pattern. SHA-256 is a general-purpose cryptographic hash built for speed, not password storage. Without a salt, identical passwords produce identical digests, making the entire hash database vulnerable to a single precomputed rainbow table lookup. This vulnerability is fixed in 3.7.3.

Patch / fix

fixed in 1

wegia wegia 3.7.3

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 5 mo ago (2026-05-27)

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/LabRedesCefetRJ/WeGIA/security/advisories/GHSA-hcgv-vmq6-j6qg referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

LabRedesCefetRJ WeGIA

Classification

Weakness

CWE-759 Use of a One-Way Hash without a Salt
CWE-916 Use of Password Hash With Insufficient Computational Effort

References

github.com /LabRedesCefetRJ/WeGIA/security/advisories/GHSA-hcgv-vmq6-j6qg
exploit

Sources

CVE List CVE-2026-45027
NVD CVE-2026-45027

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary