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Vulnerability record · CVE-2021-43257 · published 14 April 2022

CVE-2021-43257: Mantisbt csv injection vulnerability

Mantisbt · Mantisbt

Lack of Neutralization of Formula Elements in the CSV API of MantisBT before 2.25.3 allows an unprivileged attacker to execute code or gain access to information when a user opens the csv_export.php generated CSV file in Excel.

7.8 CVSS 3.1 High EPSS 0.98% · top 39.3% CWE-1236 · CSV injection
7.8CVSS 3.1 base score, v2 6.0
0.98%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Lack of Neutralization of Formula Elements in the CSV API of MantisBT before 2.25.3 allows an unprivileged attacker to execute code or gain access to information when a user opens the csv_export.php generated CSV file in Excel.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/mantisbt/mantisbt/commit/7f4534c723e3162b8784aebda4836324041dbc3e PatchThird Party Advisory
https://www.mantisbt.org/bugs/view.php?id=29130 ExploitIssue TrackingPatchVendor Advisory
https://github.com/mantisbt/mantisbt/commit/7f4534c723e3162b8784aebda4836324041dbc3e PatchThird Party Advisory
https://www.mantisbt.org/bugs/view.php?id=29130 ExploitIssue TrackingPatchVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-43257), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.