CVE-2026-82957 hyperledger-firefly Webhook Subscription webhooks.go ValidateOptions server-side request forgery
Remote attackers can exploit a server-side request forgery vulnerability in Hyperledger FireFly's webhook subscription validation to access internal resources.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82957?
CVE-2026-82957 is a medium-severity server-side request forgery vulnerability in hyperledger-firefly firefly, published on 31 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in hyperledger-firefly firefly up to 1.4.0. The impacted element is the function ValidateOptions of the file internal/events/webhooks/webhooks.go of the component Webhook Subscription. Performing a manipulation of the argument url results in server-side request forgery. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-918
Which versions are affected by CVE-2026-82957?
How do I fix CVE-2026-82957?
No fix has been published for CVE-2026-82957 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-82957 being exploited?
There is no known exploitation of CVE-2026-82957 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-wq27-c6xr-6c38.