CVE-2026-34746 — payload
HIGHCVE-2026-34746 is a high-severity (CVSS 7.7) Server-Side Request Forgery (SSRF) vulnerability in payload. A fix is available for payload — see the affected versions and patch details below.
Payload has Authenticated SSRF via Upload Functionality
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-34746.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2026-34746 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 378,567 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
payloadnpmDescription
Impact
An authenticated Server-Side Request Forgery (SSRF) vulnerability existed in the upload functionality.
Authenticated users with create or update access to an upload-enabled collection could cause the server to make outbound HTTP requests to arbitrary URLs.
Consumers are affected if ALL of these are true:
- Payload version < v3.79.1
- At least one collection with
uploadenabled - An authenticated user has
createorupdateaccess to that collection
Patches
This vulnerability has been patched in v3.79.1. Users should upgrade to v3.79.1 or later.
Workarounds
Until consumers can upgrade:
- Restrict
createandupdateaccess to upload-enabled collections to trusted roles only. - Limit outbound network access from your Payload server where possible.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | payload | all versions | 3.79.1npm install payload@3.79.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for payload, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update payload to 3.79.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-34746 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-34746 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2026-34746. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2026-34746 in your dependencies?
O3 Security finds CVE-2026-34746 across npm dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.