How severe is CVE-2009-3898?

CVE-2009-3898 has a CVSS 2.0 base score of 4.9, rated medium severity.

Is CVE-2009-3898 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3898?

CVE-2009-3898 primarily affects F5 Nginx. In total, 285 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-3898?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-3898 published?

CVE-2009-3898 was published on 2009-11-24 and last updated on 2026-06-16.

CVE-2009-3898

CVE-2009-3898 is a medium-severity vulnerability in F5 Nginx with a CVSS 2.0 base score of 4.9. Its EPSS exploit-prediction score of 16% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 2.0 base score 4.9)
EPSS exploit prediction: 16% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: F5 Nginx
Published: 2009-11-24
Last modified: 2026-06-16

Description

Directory traversal vulnerability in src/http/modules/ngx_http_dav_module.c in nginx (aka Engine X) before 0.7.63, and 0.8.x before 0.8.17, allows remote authenticated users to create or overwrite arbitrary files via a .. (dot dot) in the Destination HTTP header for the WebDAV (1) COPY or (2) MOVE method.

Frequently asked questions

What is CVE-2009-3898?: Directory traversal vulnerability in src/http/modules/ngx_http_dav_module.c in nginx (aka Engine X) before 0.7.63, and 0.8.x before 0.8.17, allows remote authenticated users to create or overwrite arbitrary files via a .. (dot dot) in the Destination HTTP header for the WebDAV (1) COPY or (2) MOVE method.
How severe is CVE-2009-3898?: CVE-2009-3898 has a CVSS 2.0 base score of 4.9, rated medium severity.
Is CVE-2009-3898 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3898?: CVE-2009-3898 primarily affects F5 Nginx. In total, 285 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-3898?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-3898 published?: CVE-2009-3898 was published on 2009-11-24 and last updated on 2026-06-16.

References

Affected products (285)

cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.3:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.4:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.5:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.6:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.7:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.8:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.9:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.10:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.11:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.12:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.13:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.14:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.15:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.16:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.17:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.18:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.19:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.20:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.21:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.22:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.23:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.24:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.25:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.26:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.27:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.28:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.29:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.30:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.31:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.32:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.33:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.34:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.35:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.36:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.37:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:0.1.38:*:*:*:*:*:*:*

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