CVE-2018-25056Network attack vector

Stored cross-site scripting via unsanitized package descriptions

Published Dec 28, 2022 · Updated Aug 5, 2024

Cross-site scripting in Yola Yolapi allows remote authenticated users to run script in package-page viewers' browsers via crafted metadata. render_description converts package Markdown or reStructuredText into HTML and passes the result to mark_safe without first sanitizing untrusted tags and attributes. Package-metadata submission requires privileges, and script execution requires a viewer to open the rendered description.

CVSS severity3.5
Low
EPSS probability0.49%
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 Yola Yolapi allows remote authenticated users to run script in package-page viewers' browsers via crafted metadata. render_description converts package Markdown or reStructuredText into HTML and passes the result to mark_safe without first sanitizing untrusted tags and attributes. Package-metadata submission requires privileges, and script execution requires a viewer to open the rendered description.

The record

CVE
CVE-2018-25056
Published
Dec 28, 2022
Updated
Aug 5, 2024
Vendor
Yola
Product
Yolapi
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Yola · Yolapiversion=n/a

Published CVSS scores

3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
6.1NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.5VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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