CVE-2025-27309Network attack vector

Unauthenticated stored script execution

Published Apr 17, 2025 · Updated Apr 28, 2026

Stored XSS in Jeannot Muller Flickr Slideshow Wrapper 5.4.6 and earlier allows remote attackers to execute scripts in visitors' browsers. The published advisory does not identify the affected input, storage location, or output routine that fails to neutralize the payload. No authentication is required to plant the payload, but execution requires a privileged user to visit crafted content or submit a crafted form.

CVSS severity7.1
High
EPSS probability0.29%
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 Jeannot Muller Flickr Slideshow Wrapper 5.4.6 and earlier allows remote attackers to execute scripts in visitors' browsers. The published advisory does not identify the affected input, storage location, or output routine that fails to neutralize the payload. No authentication is required to plant the payload, but execution requires a privileged user to visit crafted content or submit a crafted form.

The record

CVE
CVE-2025-27309
Published
Apr 17, 2025
Updated
Apr 28, 2026
Vendor
Jeannot Muller
Product
Flickr Slideshow Wrapper
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record 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 <=5.4.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jeannot Muller · Flickr Slideshow Wrapperversion=0 <=5.4.6

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

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')
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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