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Fencer Vulns
high 8.8

CVE-2016-4311 json

Cross-site request forgery (CSRF) vulnerability in the XACML flow feature in WSO2 Identity Server 5.1.0 allows remote attackers to hijack t…

published 2017-02-16 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-5311

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.4%
EPSS 3.4% chance of exploitation in 30 days, percentile 88%
public exploits
1
Exploit-DB

Summary

Cross-site request forgery (CSRF) vulnerability in the XACML flow feature in WSO2 Identity Server 5.1.0 allows remote attackers to hijack the authentication of privileged users for requests that process XACML requests via an entitlement/eval-policy-submit.jsp request.

Patch / fix

Timeline

  1. First public exploit (EDB-40239)
  2. Published

Exploit prediction

3.38% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-40239 WSO2 Identity Server 5.1.0 - Multiple Vulnerabilities webapps, 2016-08-16
  • hyp3rlinx.altervista.org http://hyp3rlinx.altervista.org/advisories/WSO2-IDENTITY-SERVER-v5.1.0-XML-External-Entity.txt referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/138329/WSO2-Identity-Server-5.1.0-XML-Injection.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-352 Cross-Site Request Forgery

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.