CVE-2021-42551: Reflected XSS in NetBiblio WebOPAC search functionality

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-01-14 · updated 2026-06-17
Weakness: CWE-79

Description

Cross-site Scripting (XSS) vulnerability in the search functionality of AlCoda NetBiblio WebOPAC allows an unauthenticated user to craft a reflected Cross-Site Scripting attack. This issue affects: AlCoda NetBiblio WebOPAC versions prior to 4.0.0.320; versions later than 4.0.0.328. This issue does not affect: AlCoda NetBiblio WebOPAC version 4.0.0.335 and later versions.

Affected products

AlCoda NetBiblio WebOPAC: before 4.0.0.320; from 4.0.0.328 before 4.0.0.335 — fixed in 4.0.0.320, 4.0.0.335

How to fix

Upgrade to a fixed version: AlCoda NetBiblio WebOPAC 4.0.0.320, 4.0.0.335. Check the vendor advisory for mitigations.

References

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