CVE-2026-52520Public exploitNetwork attack vector

Admin account takeover via unsanitized article Markdown

Published Aug 3, 2026 · Updated Aug 3, 2026

Stored XSS in Emlog Pro 2.6.23 and earlier allows remote authenticated users to execute JavaScript in article viewers' browsers. The article save path stores content verbatim, Parsedown leaves raw HTML unchanged because safe escaping is not enabled, and the template echoes that output. Writer privileges suffice; viewing the published article executes the stored payload, enabling session theft and administrative actions in the victim's context.

CVSS severity8.7
High
EPSS probability0.17%
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 Emlog Pro 2.6.23 and earlier allows remote authenticated users to execute JavaScript in article viewers' browsers. The article save path stores content verbatim, Parsedown leaves raw HTML unchanged because safe escaping is not enabled, and the template echoes that output. Writer privileges suffice; viewing the published article executes the stored payload, enabling session theft and administrative actions in the victim's context.

The record

CVE
CVE-2026-52520
Published
Aug 3, 2026
Updated
Aug 3, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.7emlogCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

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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