CVE-2015-5216Network attack vector

Browser script execution via unescaped exception message

Published Feb 17, 2020 · Updated Aug 6, 2024

Cross-site scripting in Ipsilon 0.1.0 before 1.0.1 allows remote attackers to execute script in users' browsers via HTTP responses. The IdP passes unescaped HTTP response content into a Python exception-message template, allowing injected JavaScript to reach rendered error output. Exploitation requires a user to load the crafted response; successful script runs in the Ipsilon site's browser context and can read or alter data available to that session.

CVSS severity6.1
Medium
EPSS probability1.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Ipsilon 0.1.0 before 1.0.1 allows remote attackers to execute script in users' browsers via HTTP responses. The IdP passes unescaped HTTP response content into a Python exception-message template, allowing injected JavaScript to reach rendered error output. Exploitation requires a user to load the crafted response; successful script runs in the Ipsilon site's browser context and can read or alter data available to that session.

The record

CVE
CVE-2015-5216
Published
Feb 17, 2020
Updated
Aug 6, 2024
Vendor
Ipsilon Project
Product
Ipsilon
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 17, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.1.0 before 1.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ipsilon Project · Ipsilonversion=0.1.0 before 1.0.1

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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