SSRF in Hyperledger-Firefly Firefly
CVE-2026-82957
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (42.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- Hyperledger-Firefly Firefly — versions 1.0, 1.1, 1.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- vuldb.com/cve/CVE-2026-82957 (third-party-advisory)
- vuldb.com/submit/879847 (third-party-advisory)
- vuldb.com/vuln/397306 (technical-description, vdb-entry)
- vuldb.com/vuln/397306/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-82957?
- CVE-2026-82957 is a high-severity vulnerability in Hyperledger-Firefly Firefly, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.3/10. Published 2026-08-31.
- How severe is CVE-2026-82957?
- High severity. CVSS v3 base score is 7.3 out of 10.
- Is CVE-2026-82957 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.