CVE-2025-26756Network attack vector

Stored XSS via unsanitized plugin options

Published Feb 22, 2025 · Updated Apr 28, 2026

Stored XSS in grimdonkey Magic the Gathering Card Tooltips 3.5.0 and earlier allows remote attackers to inject persistent scripts. The plugin options handler accepts untrusted form values without sufficient sanitization and later emits them without output escaping. Remote attackers need no account, but a victim must load an affected page for the stored script to execute in that browser.

CVSS severity7.1
High
EPSS probability0.24%
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 grimdonkey Magic the Gathering Card Tooltips 3.5.0 and earlier allows remote attackers to inject persistent scripts. The plugin options handler accepts untrusted form values without sufficient sanitization and later emits them without output escaping. Remote attackers need no account, but a victim must load an affected page for the stored script to execute in that browser.

The record

CVE
CVE-2025-26756
Published
Feb 22, 2025
Updated
Apr 28, 2026
Vendor
grimdonkey
Product
Magic the Gathering Card Tooltips
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 22, 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 <=3.5.0 changes=[{"at":"3.6.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

grimdonkey · Magic the Gathering Card Tooltipsversion=0 <=3.5.0 changes=[{"at":"3.6.0","status":"unaffected"}]

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
CAPEC-592Stored XSS
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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