CVE-2019-25544CWE-807

Pidgin 2.13.0 Denial of Service via Malformed Username

Medium · published March 21, 2026

CVSS v4.0
6.9
EPSS
0%
Percentile
8.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00194 · 8.7th percentile
Weakness
CWE-807 · Reliance on Untrusted Inputs in a Security Decision
Published
2026-03-21T12:46Z
EPSS history
Timeline
  • 21 MAR 12:46Z
    Pidgin 2.13.0 Denial of Service via Malformed Username
    cvelistv5