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CVE-2009-20001

25
FAUCET Score

CVE-2009-20001 describes a session management vulnerability in MantisBT versions prior to 2.24.5, where a user's unique cookie string is not invalidated upon logout. This flaw allows an attacker who obtains a user's cookie to bypass authentication and log in as that user. Rated with a CVSS score of 8.1 (High), it presents a low-complexity network attack vector with high impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.24.5CPE matchmatch criteria
cpe:2.3:a:mantisbt:mantisbt:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.87%
Probability of exploitation in next 30 days
EPSS Percentile
55.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0087 is in the 50th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

composerpatch availablevia ghsa
Product: mantisbt/mantisbtFixed in: 2.24.5

Vendor Advisories (1)

composerGHSA-jm72-67rm-763jhigh

MantisBT Insufficient Session Expiration cookie string not reset after logout

Apr 21, 2022

References

mantisbt.org / bugs/view.php
Issue TrackingVendor Advisory
mantisbt.org / bugs/view.php
ExploitIssue TrackingVendor Advisory