CVE-2024-27278Network attack vector

Stored XSS via rendered profile nickname

Published Mar 5, 2024 · Updated Mar 27, 2025

Stored XSS in OpenPNE Project opTimelinePlugin 1.2.11 and earlier allows remote authenticated users to execute scripts in other users' browsers. The timeline gadget renders a posting member's profile nickname without neutralizing embedded script content. Exploitation requires the SNS Members Timeline gadget on the home screen, a malicious nickname, a JSON API timeline post, and another user viewing it.

CVSS severity5.4
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in OpenPNE Project opTimelinePlugin 1.2.11 and earlier allows remote authenticated users to execute scripts in other users' browsers. The timeline gadget renders a posting member's profile nickname without neutralizing embedded script content. Exploitation requires the SNS Members Timeline gadget on the home screen, a malicious nickname, a JSON API timeline post, and another user viewing it.

The record

CVE
CVE-2024-27278
Published
Mar 5, 2024
Updated
Mar 27, 2025
Vendor
OpenPNE Project
Product
opTimelinePlugin
Classifications
CWE-79, CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 2025Record 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=1.2.11 and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenPNE Project · opTimelinePluginversion=1.2.11 and earlier

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4JPCERT/CC JVNCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5JPCERT/CC JVNAV:N/AC:M/Au:S/C:N/I:P/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')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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