How severe is CVE-2016-6801?

CVE-2016-6801 has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2016-6801?

CVE-2016-6801 affects the following packages: org.apache.jackrabbit:jackrabbit-webdav (Maven), org.apache.jackrabbit:jackrabbit-webdav (Maven), org.apache.jackrabbit:jackrabbit-webdav (Maven), org.apache.jackrabbit:jackrabbit-webdav (Maven), org.apache.jackrabbit:jackrabbit-webdav (Maven), org.apache.jackrabbit:jackrabbit-webdav (Maven). Ecosystems affected: Maven.

How do I fix CVE-2016-6801?

Update org.apache.jackrabbit:jackrabbit-webdav to 2.4.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2016-6801 is resolved across your whole dependency graph.

How do I detect CVE-2016-6801 in my Maven dependencies?

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

How do I mitigate CVE-2016-6801 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2016-6801 actively exploited in the wild?

No public exploit code has been indexed for CVE-2016-6801 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2016-6801?

CVE-2016-6801 has an EPSS (Exploit Prediction Scoring System) score of 2.3%, placing it in the 83th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2016-6801?

CVE-2016-6801 is classified as Cross-Site Request Forgery (CSRF) (CWE-352). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2016-6801 published, and has it been updated?

CVE-2016-6801 was published on September 21, 2016 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

HIGH severity

CVE-2016-6801 — jackrabbit-webdav

HIGHFix: apache/jackrabbit@16f2f02

CVE-2016-6801 is a high-severity (CVSS 8.8) Cross-Site Request Forgery (CSRF) vulnerability in org.apache.jackrabbit:jackrabbit-webdav. A fix is available for org.apache.jackrabbit:jackrabbit-webdav — see the affected versions and patch details below.

Apache Jackrabbit Authentication Hijacking Vulnerability

Also known asGHSA-9fc7-rhq3-wm7x

Published

Sep 21, 2016

Updated

Oct 24, 2026

Affected

6 pkgs

Patched

6 / 6

Exploits

None indexed

Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

2.3%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs83th percentile — riskier than 83% of all scored CVEsHighest risk

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

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

6 pkgs affected

☕org.apache.jackrabbit:jackrabbit-webdav☕org.apache.jackrabbit:jackrabbit-webdav☕org.apache.jackrabbit:jackrabbit-webdav☕org.apache.jackrabbit:jackrabbit-webdav☕org.apache.jackrabbit:jackrabbit-webdav☕org.apache.jackrabbit:jackrabbit-webdav

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

Cross-site request forgery (CSRF) vulnerability in the CSRF content-type check in Jackrabbit-Webdav in Apache Jackrabbit 2.4.x before 2.4.6, 2.6.x before 2.6.6, 2.8.x before 2.8.3, 2.10.x before 2.10.4, 2.12.x before 2.12.4, and 2.13.x before 2.13.3 allows remote attackers to hijack the authentication of unspecified victims for requests that create a resource via an HTTP POST request with a (1) missing or (2) crafted Content-Type header.

Affected Packages

6 total 6 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.jackrabbit:jackrabbit-webdav`	≥ 2.4.0&&< 2.4.6	2.4.6`org.apache.jackrabbit:jackrabbit-webdav:2.4.6`
☕Maven	`org.apache.jackrabbit:jackrabbit-webdav`	≥ 2.6.0&&< 2.6.6	2.6.6`org.apache.jackrabbit:jackrabbit-webdav:2.6.6`
☕Maven	`org.apache.jackrabbit:jackrabbit-webdav`	≥ 2.8.0&&< 2.8.3	2.8.3`org.apache.jackrabbit:jackrabbit-webdav:2.8.3`
☕Maven	`org.apache.jackrabbit:jackrabbit-webdav`	≥ 2.10.0&&< 2.10.4	2.10.4`org.apache.jackrabbit:jackrabbit-webdav:2.10.4`
☕Maven	`org.apache.jackrabbit:jackrabbit-webdav`	≥ 2.12.0&&< 2.12.4	2.12.4`org.apache.jackrabbit:jackrabbit-webdav:2.12.4`
☕Maven	`org.apache.jackrabbit:jackrabbit-webdav`	≥ 2.13.0&&< 2.13.3	2.13.3`org.apache.jackrabbit:jackrabbit-webdav:2.13.3`

Affected Products

2 products · 27 configurations

Application

jackrabbitapache

26 versions

2.4.02.4.12.4.22.4.32.4.42.4.52.6.02.6.12.6.22.6.32.6.42.6.5

debian linuxdebian

1 version

8.0

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.jackrabbit:jackrabbit-webdav, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.jackrabbit:jackrabbit-webdav to 2.4.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2016-6801 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2016-6801 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

8.8/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Raw vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE Classification

CWE-352Cross-Site Request Forgery (CSRF)

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

OpenSSF Scorecard

Package health score

jackrabbit

5.5/10

Code-Review1/10

Maintained8/10

Branch-ProtectionN/A

Assessed Nov 2, 2026

Timeline

Disclosed

Sep 21, 2016

Last updated

Oct 24, 2026

Identifiers

CVE-2016-6801

GHSA-9fc7-rhq3-wm7x

References

Advisorydebian.org · dsa 3679 Advisoryopenwall.com Advisorysecurityfocus.com Advisoryissues.apache.org · JCR 4009 Advisorynvd.nist.gov · CVE 2016 6801 Webgithub.com · 16f2f02fcaef6202a2bf24c449d4fd10eb98f08d Webgithub.com · ea75d7c2aeaafecd9ab97736bf81c5616f703244 Webgithub.com · eae001a54aae9c243ac06b5c8f711b2cb2038700 Webweb.archive.org Packagegithub.com · jackrabbit

Related vulnerabilities

This CVE is high severity; 3 of 8 other CVEs with CWE-352 are rated as high or higher (top: high).

CVE-2026-96629CVE-2026-118266CVE-2026-113796CVE-2026-84312CVE-2026-62322CVE-2026-107809CVE-2026-107848CVE-2026-107295Browse all CWE-352

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 24, 2026

CVE-2016-6801 — jackrabbit-webdav

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2016-6801 in your dependencies?