CVE-2025-58859Network attack vector

Stored XSS via undisclosed cross-site request forgery

Published Sep 5, 2025 · Updated Apr 28, 2026

CSRF in David Merinas Add to Feedly 1.2.11 and earlier allows remote attackers to store XSS payloads through a user's browser. Patchstack has not published the affected request handler, parameter, or missing request-validation operation, so the code-level mechanism is undisclosed. Exploitation requires user interaction, after which the stored script can execute in later visitors' browser contexts.

CVSS severity7.1
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in David Merinas Add to Feedly 1.2.11 and earlier allows remote attackers to store XSS payloads through a user's browser. Patchstack has not published the affected request handler, parameter, or missing request-validation operation, so the code-level mechanism is undisclosed. Exploitation requires user interaction, after which the stored script can execute in later visitors' browser contexts.

The record

CVE
CVE-2025-58859
Published
Sep 5, 2025
Updated
Apr 28, 2026
Vendor
David Merinas
Product
Add to Feedly
Classifications
CWE-352, CAPEC-592, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 5, 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 <=1.2.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

David Merinas · Add to Feedlyversion=0 <=1.2.11

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-352Cross-Site Request Forgery (CSRF)
CAPEC-592Stored XSS
T1189Drive-by Compromise

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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