What is CVE-2021-45811?

CVE-2021-45811 is a medium-severity vulnerability in Enhancesoft Osticket, classified under SQL Injection. CVSS score: 6.5/10. Published 2023-09-08.

How severe is CVE-2021-45811?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2021-45811 known to be exploited?

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

SQL Injection in Enhancesoft Osticket

CVE-2021-45811

A SQL injection vulnerability in the "Search" functionality of "tickets.php" page in osTicket 1.15.x allows authenticated attackers to execute arbitrary SQL commands via the "keywords" and "topic_id" URL parameters combination.

Vulnerability class: SQL Injection

Published 2023-09-08 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.025 (84.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: +0.000

Affected products

Enhancesoft Osticket

Weakness classification (CWE)

CWE-89 — SQL Injection

Public proof-of-concept exploits

References

af854a3a-2127-422b-91ae-364da2661108 (Product)
af854a3a-2127-422b-91ae-364da2661108 (Product)
members.backbox.org/osticket-sql-injection/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-45811?: CVE-2021-45811 is a medium-severity vulnerability in Enhancesoft Osticket, classified under SQL Injection. CVSS score: 6.5/10. Published 2023-09-08.
How severe is CVE-2021-45811?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2021-45811 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.