CVE-2025-10329Public exploitNetwork attack vector

Authenticated SSRF via unfiltered bookmark URL

Published Sep 12, 2025 · Updated Sep 15, 2025

Server-side request forgery in Unmark 1.9.0 through 1.9.3 allows remote authenticated users to make server-side HTTP requests. Marks.php accepts the url POST parameter, checks only for an HTTP or HTTPS prefix, and passes it to DOMDocument::loadHTMLFile without blocking private addresses. A valid account and access to the bookmark-add endpoint are required; crafted URLs can make the host contact internal or otherwise restricted HTTP services.

CVSS severity6.3
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Server-side request forgery in Unmark 1.9.0 through 1.9.3 allows remote authenticated users to make server-side HTTP requests. Marks.php accepts the url POST parameter, checks only for an HTTP or HTTPS prefix, and passes it to DOMDocument::loadHTMLFile without blocking private addresses. A valid account and access to the bookmark-add endpoint are required; crafted URLs can make the host contact internal or otherwise restricted HTTP services.

The record

CVE
CVE-2025-10329
Published
Sep 12, 2025
Updated
Sep 15, 2025
Vendor
Colin Devroe
Product
Unmark
Classifications
CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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=1.9.0
  2. Affected versionversion=1.9.1
  3. Affected versionversion=1.9.2
  4. Affected versionversion=1.9.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Colin Devroe · Unmarkversion=1.9.0; version=1.9.1; version=1.9.2; version=1.9.3

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

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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