Werkzeug is a Web Server Gateway Interface web application library. On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable. Werkzeug version 3.0.6 contains a patch.
CVE-2024-49766
This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.8%, top 48% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.3
- EG Score
- 5.3(medium)
- EG Risk
- 24(Track)EG Risk 24/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity53% × 45%Exploitation1% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 52.3%
- KEV
- Not listed
Published
October 25, 2024
Last Modified
December 3, 2025
References (4)
- security-advisories@githubhttps://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092
- security-advisories@githubhttps://github.com/pallets/werkzeug/releases/tag/3.0.6
- security-advisories@githubhttps://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j
- af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20250131-0005/
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| werkzeug | 0.1 ... 3.0.5 (96 versions) | 3.0.6 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 14× in last 7d / 46× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2024-49766?
When was CVE-2024-49766 disclosed?
Is CVE-2024-49766 actively exploited?
What is the CVSS score of CVE-2024-49766?
How do I remediate CVE-2024-49766?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-49766
Is Your Infrastructure Affected by CVE-2024-49766?
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