What is CVE-2021-42551?

CVE-2021-42551 is a medium-severity vulnerability in Alcoda Netbiblio, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-01-14.

How severe is CVE-2021-42551?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-42551 known to be exploited?

5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Alcoda Netbiblio

CVE-2021-42551

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.027 (84.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Alcoda Netbiblio
Alcoda Netbiblio Webopac — versions unspecified, next of 4.0.0.328, 4.0.0.335

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

vulnerability@ncsc.ch (x_refsource_CONFIRM, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-42551?: CVE-2021-42551 is a medium-severity vulnerability in Alcoda Netbiblio, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-01-14.
How severe is CVE-2021-42551?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-42551 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.