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.

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Pidgin Pidgin affected
Version Status Constraints
2.13.0 affected —

No data.

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Project Subscriptions

Vendors Products
Pidgin Subscribe
Pidgin Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://pidgin.im/ cve-icon cve-icon
https://www.exploit-db.com/exploits/46930 cve-icon cve-icon
https://www.vulncheck.com/advisories/pidgin-denial-of-service-via-malformed-username cve-icon cve-icon
History

Sat, 21 Mar 2026 13:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Pidgin 2.13.0 Denial of Service via Malformed Username
First Time appeared Pidgin
Pidgin pidgin
Weaknesses CWE-807
CPEs cpe:2.3:a:pidgin:pidgin:2.14.0:*:*:*:*:*:*:*
cpe:2.3:a:pidgin:pidgin:2.14.10:*:*:*:*:*:*:*
cpe:2.3:a:pidgin:pidgin:2.14.1:*:*:*:*:*:*:*
cpe:2.3:a:pidgin:pidgin:2.14.2:*:*:*:*:*:*:*
cpe:2.3:a:pidgin:pidgin:2.14.3:*:*:*:*:*:*:*
cpe:2.3:a:pidgin:pidgin:2.14.4:*:*:*:*:*:*:*
cpe:2.3:a:pidgin:pidgin:2.14.5:*:*:*:*:*:*:*
cpe:2.3:a:pidgin:pidgin:2.14.6:*:*:*:*:*:*:*
cpe:2.3:a:pidgin:pidgin:2.14.7:*:*:*:*:*:*:*
cpe:2.3:a:pidgin:pidgin:2.14.8:*:*:*:*:*:*:*
cpe:2.3:a:pidgin:pidgin:2.14.9:*:*:*:*:*:*:*
Vendors & Products Pidgin
Pidgin pidgin
References
Metrics cvssV3_1

{'score': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.9, '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-03-21T12:46:48.415Z

Reserved: 2026-03-21T12:23:17.461Z

Link: CVE-2019-25544

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-21T13:16:15.270

Modified: 2026-03-21T13:16:15.270

Link: CVE-2019-25544

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses