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Vulnerability record · CVE-2009-20001 · published 7 March 2021

CVE-2009-20001: Mantisbt insufficient session expiration vulnerability

Mantisbt · Mantisbt

An issue was discovered in MantisBT before 2.24.5. It associates a unique cookie string with each user. This string is not reset upon logout (i.e., the user session is still considered valid and active), allowing an attacker who somehow gained access to a user's cookie to login as them.

8.1 CVSS 3.1 High EPSS 0.87% · top 42.8% CWE-613 · Insufficient session expiration
8.1CVSS 3.1 base score, v2 5.5
0.87%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

An issue was discovered in MantisBT before 2.24.5. It associates a unique cookie string with each user. This string is not reset upon logout (i.e., the user session is still considered valid and active), allowing an attacker who somehow gained access to a user's cookie to login as them.

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

Affected products

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

References

LinkTags
https://mantisbt.org/bugs/view.php?id=11296 Issue TrackingVendor Advisory
https://mantisbt.org/bugs/view.php?id=27976 ExploitIssue TrackingVendor Advisory
https://mantisbt.org/bugs/view.php?id=11296 Issue TrackingVendor Advisory
https://mantisbt.org/bugs/view.php?id=27976 ExploitIssue TrackingVendor Advisory

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2009-20001), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.