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CRITICAL severity

CVE-2022-0767 — calibreweb

CRITICALFix: janeczku/calibre-web@965352c

CVE-2022-0767 is a critical-severity (CVSS 9.1) Server-Side Request Forgery (SSRF) vulnerability in calibreweb. 1 public exploit reference exists, so weaponization risk is real. A fix is available for calibreweb — see the affected versions and patch details below.

Server-Side Request Forgery (SSRF) in janeczku/calibre-web

Also known asGHSA-h65g-jfqg-2w6mPYSEC-2026-306
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Oct 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.0%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs61th percentile — riskier than 61% of all scored CVEsHighest risk
0.00%0.49%0.99%1.48%0.2%1.0%Apr 26Aug 26Oct 26

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

How urgent is this, really

CVE-2022-0767 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 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
🐍calibreweb

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

Description

calibreweb prior to version 0.6.17 is vulnerable to server-side request forgery (SSRF). This is a result of incomplete SSRF protection that can be bypassed via an HTTP redirect. An HTTP server set up to respond with a 302 redirect may redirect a request to localhost.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIcalibreweball versions0.6.17pip install --upgrade 'calibreweb==0.6.17'

Affected Products

1 product · 1 configurations
Application
calibre-webjaneczku
< 0.6.17
range
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.

Server-Side Request Forgery (SSRF) in GitHub repository janeczku/calibre…

huntr.devNVDMar 2022

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update calibreweb to 0.6.17 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-0767 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

calibreweb prior to version 0.6.17 is vulnerable to server-side request forgery (SSRF). This is a result of incomplete SSRF protection that can be bypassed via an HTTP redirect. An HTTP server set up to respond with a 302 redirect may redirect a request to `localhost`.
O3 Security · Impact-Aware SCA

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CVE-2022-0767: calibreweb SSRF — Fixed in 0.6.17