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Not in CISA KEV
HIGH severity

Server-Side Request Forgery in snipe/snipe-itGHSA-553q-hpvp-q8pc

HIGHFix: snipe/snipe-it@4612b9e

GHSA-553q-hpvp-q8pc is a high-severity (CVSS 7.2) Server-Side Request Forgery (SSRF) vulnerability in snipe/snipe-it. 1 public exploit reference exists, so weaponization risk is real. A fix is available for snipe/snipe-it — see the affected versions and patch details below.

Also known asCVE-2021-4075
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Oct 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.9%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs59th percentile — riskier than 59% of all scored CVEsHighest risk
0.00%0.47%0.95%1.42%0.3%0.9%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-553q-hpvp-q8pc by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,987 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
🐘snipe/snipe-it

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

Description

Admin users on the external network can perform blind POST-based SSRF (issue requests on behalf of the server into the internal network) via the Slack Integration. This vulnerability is capable of port-scanning of the internal network, issue POST requests to web servers on the internal network which can be escalated to higher-impact.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistsnipe/snipe-itall versions6.0.0-GMcomposer require snipe/snipe-it:^6.0.0-GM

Affected Products

1 product · 1 configurations
Application
snipe-itsnipeitapp
all
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

snipe-it is vulnerable to Server-Side Request Forgery (SSRF)

huntr.devNVDDec 2021

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for snipe/snipe-it, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update snipe/snipe-it to 6.0.0-GM or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-553q-hpvp-q8pc is resolved across your whole dependency graph.

  3. Workarounds

    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

Admin users on the external network can perform blind POST-based SSRF (issue requests on behalf of the server into the internal network) via the Slack Integration. This vulnerability is capable of port-scanning of the internal network, issue POST requests to web servers on the internal network which can be escalated to higher-impact.
O3 Security · Impact-Aware SCA

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Server-Side Request Forgery in snipe/snipe-it (High 7.2)