CVE-2026-53510 Savon::Model evaluates WSDL operation names as Ruby source
Attackers can execute arbitrary Ruby code by providing malicious WSDL operation names to the Savon SOAP client library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-53510?
CVE-2026-53510 is a high-severity code injection vulnerability in savonrb savon, published on 31 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Savon is a Ruby SOAP client. From 0.9.8 until 2.17.2, Savon::Model .all_operations interpolates attacker-controlled WSDL operation names into Ruby source passed to module_eval, allowing Ruby code execution in the application process. This issue is fixed in version 2.17.2.
Weakness: CWE-94
Which versions are affected by CVE-2026-53510?
2 open source packages ship an affected version, including savon.
| Package | Affected | Fixed in |
|---|---|---|
savon RubyGems | From 0.9.8 | 2.17.2 |
savon RubyGems | From 0.9.8 | 2.17.2 |
How do I fix CVE-2026-53510?
Upgrade savon to 2.17.2 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-53510 being exploited?
There is no known exploitation of CVE-2026-53510 in the wild and no public exploit code.
Sources
Also known as GHSA-mx5j-mp4f-g8jg.