CVE-2021-43097

Name: CVE-2021-43097
Creator: NVD / NIST
Published: 2022-03-28T22:15:09.257+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 2.23%

Last modified Jun 17, 2026

CVE-2021-43097 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. A Server-side Template Injection (SSTI) vulnerability exists in bbs 5.3 in TemplateManageAction.javawhich could let a malicoius user execute arbitrary code.. EPSS estimates a 2.23% chance of exploitation in the next 30 days.

Description

A Server-side Template Injection (SSTI) vulnerability exists in bbs 5.3 in TemplateManageAction.javawhich could let a malicoius user execute arbitrary code.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.23%

80.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Diyhi	Bbs	5.3

References

https://github.com/diyhi/bbs/issues/51Exploit, Issue Tracking, Third Party Advisory
https://github.com/diyhi/bbs/issues/51Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Mar 28, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43097?

A Server-side Template Injection (SSTI) vulnerability exists in bbs 5.3 in TemplateManageAction.javawhich could let a malicoius user execute arbitrary code.

How severe is CVE-2021-43097?

CVE-2021-43097 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 2.23% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43097?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-43097?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST