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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Pidgin | Pidgin | 2.13.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | pidgin | No fix yet | — |
| Ubuntu 26.04 LTS | pidgin | No fix yet | — |
| Ubuntu 25.10 | pidgin | No fix yet | — |
| Ubuntu 24.04 LTS | pidgin | No fix yet | — |
| Ubuntu 22.04 LTS | pidgin | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | pidgin | No fix yet | — |
| Ubuntu 18.04 LTS | pidgin | No fix yet | — |
| Ubuntu 16.04 LTS | pidgin | No fix yet | — |
| Ubuntu 14.04 LTS | pidgin | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | farstream | 0.2.8-5.2.4 | SUSE-SU-2026:2967-1 |
| SLES 12 SP5 | gssdp | 0.14.16-7.2.1 | SUSE-SU-2026:2967-1 |
| SLES 12 SP5 | gupnp | 0.20.18-8.5.2 | SUSE-SU-2026:2967-1 |
| SLES 12 SP5 | gupnp-igd | 0.2.4-6.2.2 | SUSE-SU-2026:2967-1 |
| SLES 12 SP5 | libgnt | 2.14.3-4.3.8 | SUSE-SU-2026:2967-1 |
| SLES 12 SP5 | libnice | 0.1.13-7.2.3 | SUSE-SU-2026:2967-1 |
| SLES 12 SP5 | pidgin | 2.14.8-3.9.3 | SUSE-SU-2026:2967-1 |
Advisories 1
- SUSE-SU-2026:2967-1 Security update for libgnt, meson, pidgin SUSE / openSUSE Security Updates · Jul 15, 2026
References
- ExploitDB-46930 exploit
- Official Product Homepage product
- VulnCheck Advisory: Pidgin 2.13.0 Denial of Service via Malformed Username third-party-advisory