CVE-2019-25544

MEDIUM 6.2

Pidgin 2.13.0 Denial of Service via Malformed Username

CVSS Score

6.2

EPSS Score

0.0%

EPSS Percentile

3th

Pidgin 2.13.0 contains a denial of service vulnerability that allows local attackers to crash the application by providing an excessively long username string during account creation. Attackers can input a buffer of 1000 characters in the username field and trigger a crash when joining a chat, causing the application to become unavailable.

CWE	CWE-807
Vendor	pidgin
Product	pidgin
Published	Mar 21, 2026
Last Updated	Mar 24, 2026

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CVSS v3 Breakdown

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

Pidgin / Pidgin

2.13.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/46930 pidgin.im: https://pidgin.im/ vulncheck.com: https://www.vulncheck.com/advisories/pidgin-denial-of-service-via-malformed-username

Credits

Alejandra Sánchez