# CVE-2026-3270: psi-probe-core SSRF

☕ Maven

Not in CISA KEV

# CVE-2026-3270 — psi-probe-core

CVE-2026-3270 is a Server-Side Request Forgery (SSRF) vulnerability in com.github.psi-probe:psi-probe-core. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

psi-probe PSI Probe Whois Whois.java lookup server-side request forgery

Also known as[GHSA-429m-9874-rx9w](/vulnerability/GHSA-429m-9874-rx9w)

Published

Feb 26, 2026

Updated

Oct 28, 2026

Affected

1 pkg

Patched

See advisory

Exploits

None indexed

Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

## Exploitation Status

### Proof-of-concept exploit code exists

-   CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-3270.

## EPSS Exploitation Probability

[via FIRST.org ↗](https://www.first.org/epss/)

0.4%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs35th percentile — riskier than 35% of all scored CVEsHighest risk

0.00%0.34%0.69%1.03%0.0%0.4%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from [FIRST.org EPSS](https://www.first.org/epss/).

## Real-World Exposure

1 pkg affected

☕`com.github.psi-probe:psi-probe-core`

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

## Description

A vulnerability has been found in psi-probe PSI Probe up to 5.3.0. This affects the function lookup of the file psi-probe-core/src/main/java/psiprobe/tools/Whois.java of the component Whois. The manipulation leads to server-side request forgery. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

## Affected Packages

1 total

Ecosystem

Package

Vulnerable range

Fix

☕Maven

`com.github.psi-probe:psi-probe-core` 

all versions

No fix

## Affected Products

1 product · 1 configurations

Application

`psi probe`psi-probe

≤ 5.3.0

range

## Detection & mitigation playbook

Open-source dependency

1.  ### Detect
    
    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.github.psi-probe:psi-probe-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
    
2.  ### Remediation status
    
    The records we use list no patched version of com.github.psi-probe:psi-probe-core for CVE-2026-3270. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.
    
3.  ### Mitigate without a patch
    
    Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.
    

## Frequently Asked Questions

A vulnerability has been found in psi-probe PSI Probe up to 5.3.0. This affects the function lookup of the file psi-probe-core/src/main/java/psiprobe/tools/Whois.java of the component Whois. The manipulation leads to server-side request forgery. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

O3 Security · Impact-Aware SCA

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